OhioHealth Online

'Clinical depression': What does that mean?
The term "clinical depression" is used to describe more severe, persistent depression.

'Degenerative changes' in the spine: Is this arthritis?
"Degenerative changes" in the spine visible on X-ray indicate osteoarthritis of the spine.

'Herbal viagra': Is it safe?
So-called "herbal viagra" products are not the same as prescription Viagra.

'Natural' steroids: Are they safe?
So-called "natural" steroids can have the same harmful side effects as synthetic steroids.

10 symptoms not to ignore
Heed these warning signs and know when to call your doctor.

10 tips for better sleep
Making a few small changes could ensure you get the sleep you need.

10 ways to control high blood pressure without medication
You can lower your blood pressure without medication. Try these 10 lifestyle changes.

5 medication-free strategies to help prevent heart disease
Heart disease prevention — five strategies you can adopt now to protect your heart.

5K run: 7-week training schedule for beginners
Are you training for a 5K run? Here's help reaching the finish line.

Abdominal ball raise with fitness ball
You can do many exercises with a fitness ball. See the abdominal ball raise.

Abdominal crunch
The abdominal crunch is a classic core-strength exercise. See how it's done.

Abdominal crunch with fitness ball
You can do many core exercises with a fitness ball. See the abdominal crunch.

Abnormal sperm morphology: What does it mean?
Abnormal sperm morphology may be a contributing factor in male infertility.

Abortion: Does it affect subsequent pregnancies?
Abortion rarely results in infertility or pregnancy complications.

Absence seizure (petit mal seizure)
Absence (petit mal) seizure — Comprehensive overview covers symptoms, treatment of this form of epilepsy.

Acai berry products: Do they have health benefits?
Acai berries — A good source of nutrients, but some health claims may go too far.

Acanthosis nigricans
Acanthosis nigricans — Comprehensive overview covers causes, treatment of this skin condition.

Acetyl-L-carnitine: Can it relieve MS fatigue?
Some research suggests that acetyl-L-carnitine may improve fatigue associated with multiple sclerosis.

Achilles tendinitis
Achilles tendinitis — Comprehensive overview covers symptoms, causes, treatment of inflammation of the Achilles tendon.

Achilles tendon rupture
Achilles tendon rupture — Comprehensive overview covers symptoms, causes, treatment of serious lower leg injury.

Acid reflux and GERD: The same thing?
Acid reflux and GERD are closely related, but the terms aren't necessarily interchangeable.

ACL injury
ACL injury — Comprehensive overview covers symptoms, risk, treatment from a torn ACL.

Acne
Acne — Comprehensive overview covers causes, acne treatments, including adult acne treatments, and prevention.

Acne scars: What's the best treatment?
Various procedures can improve acne scars, but no single treatment is best for everyone.

Acne treatments: Emerging therapies for clearer skin
Acne treatments — overview of new acne treatments, including blue light therapy and photopneumatic therapy.

Acoustic neuroma
Acoustic neuroma — Comprehensive overview covers symptoms, causes, treatment of this usually noncancerous brain tumor.

Acromegaly
Acromegaly — Comprehensive overview covers symptoms, causes, treatment of this hormonal disorder.

Acrylic nails: Can they harm your natural nails?
Acrylic nails generally aren't harmful, but they can increase your risk of infection.

Actinic keratosis
Actinic keratosis — Comprehensive overview covers symptoms, treatment, prevention of a potentially precancerous skin patch.

Acupuncture for back pain?
Acupuncture for back pain — Can acupuncture treatments relieve back pain?

Acute bronchitis: Is it contagious?
Acute bronchitis may be contagious if it's caused by a viral infection.

Acute coronary syndrome
Acute coronary syndrome — Overview covers symptoms, causes and treatment of this heart condition.

Acute kidney failure
Acute kidney failure — Comprehensive overview covers symptoms, causes of sudden loss of kidney function.

Acute liver failure
Acute liver failure — Comprehensive overview covers symptoms, diagnosis, treatment of this medical emergency.

Acute lymphocytic leukemia
Acute lymphocytic leukemia — Comprehensive overview covers symptoms, risk factors, treatment of this cancer.

Acute myelogenous leukemia (AML)
Acute myelogenous leukemia (AML) — Comprehensive overview covers symptoms, treatment of this blood cell cancer.

Acute sinusitis
Acute sinusitis — Comprehensive overview covers symptoms, causes and treatment strategies of this respiratory condition.

Acute sinusitis: Do over-the-counter treatments help?
Over-the-counter drugs may provide some relief from the symptoms of acute sinusitis.

Added sugar: Don't get sabotaged by sweeteners
Added sugar — Learn what added sugar is and how to cut back.

Addison's disease
Addison's disease — Comprehensive overview covers symptoms, treatment of this disorder of the adrenal glands.

Adenomyosis
Adenomyosis — Comprehensive overview covers symptoms, causes and treatment for this uterine condition.

Adjustment disorders
Adjustment disorders — Comprehensive overview covers symptoms, treatment and self-care of this disruptive stress reaction.

Adjuvant therapy: Treatment to keep cancer from returning
Adjuvant therapy — Adjuvant treatments such as adjuvant chemotherapy reduce the risk of cancer recurrence.

Adrenal fatigue: What causes it?
Adrenal fatigue is supposedly a mild form of adrenal insufficiency caused by chronic stress.

Adult acne: Is it caused by a hormonal imbalance?
Hormones likely play a role in adult acne. But to what extent?

Adult ADHD (attention-deficit/hyperactivity disorder)
Adult ADHD (attention-deficit/hyperactivity disorder) — Comprehensive overview covers symptoms, diagnosis, treatment of adult ADHD.

Adult bed-wetting: A concern?
Adult bed-wetting is uncommon and requires evaluation by a doctor.

Adult Still's disease
Adult Still's disease — Comprehensive overview covers symptoms, complications, treatment of this inflammatory disorder.

Aerobic exercise: How to warm up and cool down
Ready to exercise? Warming up and cooling down can keep you on the go.

Aerobic exercise: Top 10 reasons to get physical
Need inspiration to work out? Consider the top 10 benefits of aerobic exercise.

Aerobic exercise: What's the best frequency for workouts?
For cardiovascular fitness, aerobic exercise can be done in short bursts or longer sessions.

Age spots (liver spots)
Age spots — Comprehensive overview covers causes and treatments of this sun-induced skin condition.

Aging parents: 5 warning signs of health problems
Aging parents — Watch for tell-tale signs that may indicate illness in older adults.

Aging parents: During emergency, details count
Aging parents — Prepare for a medical emergency by gathering critical information ahead of time.

Aging: What to expect as you get older
Explore the natural changes that are part of the normal aging process.

Agoraphobia
Agoraphobia — Comprehensive overview covers agoraphobia symptoms, treatment and coping techniques for this anxiety disorder.

Air fresheners: Are continuous scents harmful?
Long-term use of air fresheners may contribute to indoor pollution.

Air pollution and exercise: Is outdoor exercise risky?
Air pollution and exercise — a potentially risky combination, but no excuse to avoid exercise.

Air travel during pregnancy: Is it safe?
Air travel during pregnancy is safe for most women.

Airplane ear
Airplane ear — Comprehensive overview covers causes, self-care, prevention of ear pain related to flying.

Albinism
Albinism — Comprehensive overview covers symptoms, causes, treatment, self-care and coping skills.

Alcohol intolerance
Alcohol intolerance — Comprehensive overview covers symptoms, causes, treatment of reactions to alcoholic beverages.

Alcohol poisoning
Alcohol poisoning — Comprehensive overview covers symptoms, complications, treatment of drinking too much alcohol.

Alcohol use: Do you have a drinking problem?
Alcohol use self-assessment — Take this self-assessment to rate your drinking habits and explore solutions.

Alcohol use: Why moderation is key
Alcohol use — Here's why drinking alcohol in moderation is important.

Alcohol: Does it affect blood pressure?
Drinking too much alcohol can raise your blood pressure to unhealthy levels.

Alcoholic hepatitis
Alcoholic hepatitis — Comprehensive overview covers symptoms, treatment and prevention of this disease.

Alcoholism
Alcoholism — Comprehensive overview covers causes, symptoms, treatment of this serious addiction.

Alkaline water: Better than plain water?
Alkaline water — Health claims about alkaline water abound, but plain water is usually best.

Allergies
Allergies — Comprehensive overview covers allergy symptoms, allergy testing, treatment of an allergic reaction.

Allergies and asthma: They often occur together
Allergies and asthma? Find out how to control both conditions.

Allergy medications and pregnancy: What's safe?
Allergy medications aren't necessarily off-limits during pregnancy, but it's important to be cautious.

Allergy medications: Know your options
Allergy medications can help ease your symptoms. Find out which ones are likely to work for you.

Allergy tests
What happens in an allergy test? Watch this video and find out.

Allergy-proof your house
Allergy-proof your house with these simple changes and find relief for your symptoms.

Alli weight-loss pill: Does it work?
A Mayo Clinic specialist discusses the effectiveness of Alli, an over-the-counter weight-loss pill.

Alpha blockers
Alpha blockers treat conditions such as high blood pressure and some prostate conditions.

Alternative cancer treatments: 11 alternative treatments to consider
Alternative cancer treatments may help you cope with cancer treatment side effects.

Alternative medicine: Evaluate claims of treatment success
Evaluate alternative medicine claims before choosing a treatment.

Alzheimer's care: Simple tips for daily tasks
Alzheimer's care is a tough job. These practical tips can make it easier.

Alzheimer's caregiving: Maintain your support network
Alzheimer's caregiving is an incredibly difficult job. Here's how to ask for help.

Alzheimer's disease
Alzheimer's disease — Comprehensive overview covers symptoms, causes, treatment of this debilitating disorder.

Alzheimer's disease: Anticipating end-of-life needs
Alzheimer's challenges multiply near the end of life. Tips on how to prepare.

Alzheimer's disease: Can exercise prevent memory loss?
Alzheimer's disease — Regular exercise is your best bet for preventing Alzheimer's and improving cognitive function.

Alzheimer's drugs slow progression of disease
Alzheimer's drugs can slow the progression of the disease, but not cure it.

Alzheimer's nose spray: New Alzheimer's treatment?
Alzheimer's nose spray shows promise, but more research is needed.

Alzheimer's or depression: Could it be both?
Alzheimer's and depression have some similar symptoms. Proper treatment improves quality of life.

Alzheimer's stages: How the disease progresses
Alzheimer's stages — common behaviors as the disease progresses.

Alzheimer's test: Detection at the earliest stages
A new experimental Alzheimer's test shows promise in detecting the disease earlier.

Alzheimer's treatments: What's on the horizon?
Alzheimer's treatments now being studied include an Alzheimer's vaccine and several new drugs.

Alzheimer's: Can a head injury increase my risk?
Some research indicates a link between head injuries and Alzheimer's disease. Learn more.

Alzheimer's: Can a Mediterranean diet lower my risk?
Alzheimer's — Learn about the benefits of the Mediterranean diet.

Alzheimer's: Consider options for long term care
Alzheimer's caregiving — Evaluate your loved one's future needs, preferably before a crisis arises.

Alzheimer's: Dealing with daily challenges
Alzheimer's disease — Help your loved one handle bathing, dressing and other daily activities.

Alzheimer's: Dealing with family conflict
Alzheimer's disease — Don't let the diagnosis tear your family apart.

Alzheimer's: Getting the most from medical appointments
Alzheimer's disease means lots of medical appointments. Make each visit count.

Alzheimer's: Helping children understand the disease
Alzheimer's and kids — Ease their fears and answer their questions.

Alzheimer's: How to help a caregiver
Alzheimer's care — Practical tips for how to help an Alzheimer's caregiver.

Alzheimer's: Is it in your genes?
What role does genetics play in developing Alzheimer's? Are you at risk?

Alzheimer's: Making mealtimes easier
Alzheimer's can make eating a challenge. Consider tips to promote good nutrition.

Alzheimer's: Managing sleep problems
Alzheimer's sleep problems affect both you and your loved one. Consider tips for coping.

Alzheimer's: Mementos help preserve memories
Alzheimer's steals memories, but tangible mementos may help your loved one remember the past.

Alzheimer's: Planning for the holidays
Alzheimer's and holiday celebrations — Consider your loved one's needs, but don't forget about yourself.

Alzheimer's: Smoothing the transition on moving day
Alzheimer's disease and moving — Add familiar touches to smooth the transition.

Alzheimer's: Tips for effective communication
Alzheimer's — To promote better communication, use short sentences, plain words and visual cues.

Alzheimer's: Understand and control wandering
Wandering is a common issue with Alzheimer's. Here's help keeping your loved one safe.

Alzheimer's: When to stop driving
Alzheimer's and driving — Know when it's time for your loved one to stop driving.

Ambien: Is dependence a concern?
Ambien is generally safe, but you may want to consider other treatments for insomnia as well.

Amenorrhea
Amenorrhea — Comprehensive overview covers symptoms, causes and treatment of absent menstruation.

Amnesia
Amnesia — Comprehensive overview covers symptoms, causes of an unusual memory-loss pattern.

Amputation and diabetes: How to protect your feet
Amputation is a frightening concept. If you have diabetes, put foot care first.

Amyloidosis
Amyloidosis — Comprehensive overview covers symptoms, causes and treatment of abnormal protein buildup in tissues.

Amyotrophic lateral sclerosis
Amyotrophic lateral sclerosis (ALS) — Comprehensive overview covers symptoms, treatment of this degenerative neurological condition.

An asthma attack
In an asthma attack, inflamed and swollen airways make breathing difficult.

Anal cancer
Anal cancer — Comprehensive overview covers symptoms of this uncommon cancer associated with HPV.

Anal fissure
Anal fissure — Comprehensive overview covers symptoms, causes, treatment of this often painful tear.

Anal itching
Anal itching — Comprehensive overview covers causes, treatment of this common, sometimes embarrassing condition.

Anaphylaxis
First aid for a severe allergic reaction (anaphylaxis).

Anaphylaxis
Anaphylaxis — Comprehensive overview covers symptoms, risk factors and treatment of this dangerous allergic reaction.

Anemia
Anemia — Comprehensive overview covers symptoms, causes, treatment of this red blood cell deficiency.

Anger management tips: 10 ways to tame your temper
Anger isn't bad when controlled. Get tips on anger management.

Anger management: Expert answers to common questions
A Mayo Clinic specialist discusses anger, anger management and anger management classes.

Angina
Angina — Comprehensive overview covers symptoms, causes and treatment of this type of chest pain.

Angina treatment: Stents, drugs, lifestyle changes — What's best?
Choosing angina treatment — angioplasty, stents or lifestyle changes — can be confusing. Find out more.

Angiotensin II receptor blockers
Angiotensin II receptor blockers (angiotensin II inhibitors) treat conditions such as high blood pressure.

Angiotensin-converting enzyme (ACE) inhibitors
ACE inhibitors treat high blood pressure and other conditions. Discover more about these drugs.

Anhidrosis
Anhidrosis — Comprehensive overview covers symptoms, causes, treatment of this inability to sweat normally.

Animal bites
How to administer first aid for an animal bite.

Ankle sprain
How do you get an ankle sprain? Watch this video and find out.

Ankle swelling during pregnancy: Is it a concern?
Learn about causes and treatments for ankle swelling during pregnancy.

Ankle weights for fitness walkers: Helpful or harmful?
When you walk, skip the ankle weights. The weights can change your normal gait.

Ankylosing spondylitis
Ankylosing spondylitis — Comprehensive overview covers symptoms, causes, treatment and complications of this inflammatory arthritis.

Anorexia nervosa
Anorexia — Comprehensive overview covers symptoms, causes, treatments and more.

Anorgasmia
Anorgasmia — Comprehensive overview covers causes, diagnosis and treatment of difficulty reaching orgasm.

Anthrax
Anthrax — Comprehensive overview covers symptoms, vaccine, risks of this deadly bacterial disease.

Anti-seizure medications: Relief from nerve pain
Anti-seizure drugs often are used to help control nerve pain.

Antibiotic-associated diarrhea
Antibiotic-associated diarrhea — Comprehensive overview covers causes, treatment, self-care of this potentially serious condition.

Antibiotics and alcohol: Should I avoid mixing them?
The effects of combining antibiotics and alcohol can vary, depending on the specific antibiotic.

Antibiotics and pregnancy: What's safe?
Antibiotics and pregnancy — Some antibiotics are considered safe during pregnancy, while others are not.

Antibiotics: Misuse puts you and others at risk
Antibiotic misuse creates antibiotic-resistant germs. Protect yourself and others by using antibiotics wisely.

Antidepressant withdrawal: Is there such a thing?
Antidepressant withdrawal is possible if you stop taking antidepressants abruptly — but it's generally preventable.

Antidepressants — How they help relieve depression
Watch this video to see how certain types of antidepressant medications work.

Antidepressants and alcohol: What is the concern?
Combining antidepressants and alcohol can worsen depression and cause other problems.

Antidepressants and weight gain: What causes it?
Antidepressants and weight gain: What causes it and how to manage it.

Antidepressants: Another weapon against chronic pain
Antidepressants are a mainstay in the treatment of many chronic pain conditions.

Antidepressants: Can they stop working?
Antidepressants: Reasons treatment stops working.

Antidepressants: Get tips to cope with side effects
Antidepressants — Side effects are common, but don't give up without trying these coping tips.

Antidepressants: Safe during pregnancy?
Antidepressants are central to treating depression — but during pregnancy, it's important to weigh the risks.

Antidepressants: Selecting one that's right for you
Antidepressants — Explore options to treat depression.

Antidepressants: Which cause the fewest sexual side effects?
Antidepressants — easing sexual side effects.

Antiphospholipid syndrome
Antiphospholipid syndrome — Comprehensive overview covers causes, treatment of this disorder that may impact pregnancies.

Antisocial personality disorder
Antisocial personality disorder — Comprehensive overview covers symptoms, causes, treatment of this mental health disorder.

Anxiety
Anxiety — Comprehensive overview covers symptoms, treatment of this common mental health condition.

Anxiety: A cause of high blood pressure?
Anxiety can cause dramatic, temporary increases in blood pressure.

Aortic aneurysm
Aortic aneurysm — Comprehensive overview covers symptoms, screening and treatment for this serious condition.

Aortic calcification: An early sign of heart valve problems?
Aortic calcification — once thought a harmless condition — is a sign of heart valve disease.

Aortic dissection
Aortic dissection — Comprehensive overview covers symptoms, treatment, prevention of this serious circulatory problem.

Aortic valve regurgitation
Aortic valve regurgitation — Comprehensive overview covers symptoms and treatment of this heart condition.

Aortic valve stenosis
Aortic valve stenosis — Comprehensive overview covers symptoms and treatment of this heart condition.

Aphasia
Aphasia — Comprehensive overview covers causes, treatment, coping skills for this communication disorder.

Aplastic anemia
Aplastic anemia — Comprehensive overview covers symptoms, causes, treatment of this rare blood disorder.

Appendicitis
Appendicitis — Comprehensive overview covers signs, symptoms, causes, treatment of this painful appendix inflammation.

Apple berry cobbler
Apple berry cobbler — See how to prepare this healthy recipe.

Apple cider vinegar for weight loss: Effective?
Apple cider vinegar for weight loss — Proponents insist that it works, but there's little proof.

Arcus senilis: A sign of high cholesterol?
Arcus senilis is a gray arc sometimes visible around the cornea in older adults.

ARDS
ARDS — Comprehensive overview covers symptoms, treatment of acute respiratory distress syndrome, a serious lung condition.

Arteriosclerosis / atherosclerosis
Arteriosclerosis and atherosclerosis — Comprehensive overview covers symptoms, treatment for hardening of the arteries.

Arteriovenous fistula
Arteriovenous fistula — Comprehensive overview covers the causes and treatment of this blood vessel condition.

Arthritis
Arthritis — Comprehensive overview covers arthritis symptoms, arthritis treatment and types of arthritis.

Arthritis pain medications: Do they raise blood pressure?
Arthritis pain medications: Do they cause high blood pressure?

Arthritis pain relief: Creams and gels for aching joints
Arthritis pain relief options include creams, gels and ointments for painful joints.

Arthritis pain: Do's and don'ts
Arthritis pain — To cope, strike a balance between activity and rest, and listen to your body's signals.

Arthroscopic knee surgery
Arthroscopic knee surgery — watch video of an arthroscopy procedure.

Artificial sweeteners: A safe alternative to sugar?
Artificial sweeteners (sugar substitutes) — What are they and how much is safe to eat?

Artificial sweeteners: Any effect on blood sugar?
Artificial sweeteners, also called sugar substitutes, offer the sweetness of sugar without the calories.

Asbestosis
Asbestosis — Comprehensive overview covers symptoms, causes, treatment of this chronic lung disease.

Ascariasis
Ascariasis — Comprehensive overview covers causes, treatment and prevention of this roundworm infection.

Aspergillosis
Aspergillosis — Comprehensive overview covers symptoms, causes, risk factors for this serious lung infection.

Aspirin allergy: What are the symptoms?
An "aspirin allergy" is usually a sensitivity related to aspirin — not a true allergy.

Aspirin during pregnancy: Is it safe?
Generally, aspirin during pregnancy isn't recommended.

Asthma
Asthma — Comprehensive overview covers symptoms, treatment of this chronic lung condition.

Asthma attack
Asthma attack — Comprehensive overview covers treatment, warning signs of this potentially life-threatening situation.

Asthma control test
Asthma control test: Is your asthma under control? Find out.

Asthma diet: What you eat can affect asthma symptoms
Asthma diet — Healthy eating habits may reduce asthma symptoms.

Asthma in adults: Gain control with a written asthma plan
Asthma action plan — an essential tool for managing asthma in adults.

Asthma inhalers: Which one's right for you?
Asthma inhalers — Here's a rundown of inhaler types, with tips on proper use.

Asthma medications: Know your options
Asthma medications — Which ones prevent asthma attacks, and which ones treat immediate symptoms.

Asthma treatment: 3 steps to better asthma control
Asthma treatment — three steps for controlling symptoms.

Asthma treatment: Do complementary and alternative approaches work?
Here's the scoop on which alternative asthma treatments seem to work best.

Asthma without wheezing: Is this possible?
Although wheezing is a sign of asthma, it isn't the only sign.

Asthma-friendly products: Do they help reduce symptoms?
Evaluate whether asthma-friendly products will help keep your triggers at bay.

Asthma: Limit asthma attacks caused by colds or flu
Asthma, colds and flu — Keep your sneeze from turning into a wheeze.

Asthma: Steps in testing and diagnosis
Asthma symptoms raise a red flag, but diagnosis requires evaluation and testing.

Asthma: Why are symptoms worse during my period?
Menstruation and asthma flare-ups — How your monthly cycle can worsen your asthma.

Astigmatism
Astigmatism — Comprehensive overview covers symptoms, causes, treatment of this irregular eye curvature.

Ataxia
Ataxia — Comprehensive overview covers causes and treatments for this lack of muscle coordination.

Atelectasis
Atelectasis — Comprehensive overview covers symptoms and causes of partly or completely collapsed lung.

Athlete's foot
Athlete's foot — Comprehensive overview covers causes, symptoms and treatments of this common fungal infection.

Atopic dermatitis (eczema)
Atopic dermatitis (eczema) — Comprehensive overview covers causes, symptoms and treatments of this itchy rash.

Atrial fibrillation
Atrial fibrillation — Comprehensive overview covers symptoms, causes and treatment of this common heart disorder.

Atrial septal defect (ASD)
Atrial septal defect (ASD) — Comprehensive overview covers symptoms, causes, treatment of this common heart defect.

Atrioventricular canal defect
Atrioventricular canal defect — Comprehensive overview covers symptoms, complications, treatment of this congenital heart defect.

Atypical cells: Are they cancer?
Atypical cells appear abnormal, but they aren't necessarily cancerous.

Atypical depression
Atypical depression — Comprehensive overview covers symptoms, diagnosis and treatment of this mood disorder.

Atypical hyperplasia of the breast
Atypical hyperplasia — Comprehensive overview covers treatment of atypical ductal hyperplasia and atypical lobular hyperplasia.

Autoimmune hepatitis
Autoimmune hepatitis — Comprehensive overview covers symptoms, complications, treatment and risk factors of this liver disease.

Automated external defibrillators: Do you need an AED?
Automated external defibrillators are available without a prescription. Should you get one?

Autonomic neuropathy
Autonomic neuropathy — Comprehensive overview covers symptoms, diagnosis of this nervous system condition.

Avascular necrosis
Avascular necrosis (osteonecrosis) — Comprehensive overview covers symptoms, causes, treatment of this bone condition.

Avulsion fracture: How is it treated?
An avulsion fracture occurs when a ligament or tendon is pulled from a bone.

Baby's sex: Can parents choose?
Although it's possible to choose a baby's sex, it isn't practical for most couples.

Back labor: Childbirth myth or reality?
Back labor — A Mayo Clinic specialist offers tips to manage back pain during labor.

Back pain
Back pain — Comprehensive overview covers causes, treatment, relief for this potentially disabling condition.

Back pain at work: Preventing aches, pains and injuries
What causes workplace back pain and how to avoid it.

Back pain during pregnancy
Back pain is a common complaint during pregnancy. Here's how to find relief.

Back pain relief: Ergonomic chair or fitness ball?
For back pain relief, a properly fitted ergonomic chair is generally the best choice.

Back surgery: When is it a good idea?
Back pain rarely requires surgery. Research your options before going under the knife.

Bacterial infection vs. viral infection: What's the difference?
The differences between bacterial infections and viral infections are important.

Bad breath
Bad breath — Comprehensive overview covers causes, treatment and prevention of halitosis.

Bad breath: Could a tongue scraper help?
A tongue scraper may reduce bad breath temporarily, but proper dental hygiene remains essential.

Bags under eyes
Bags under eyes — Comprehensive overview covers causes and treatment of under-eye puffiness.

Baker's cyst
Baker's cyst — Comprehensive overview covers symptoms, causes, treatment of this bulge behind the knee.

Barium enema
Barium enema — See how a barium enema is done.

Barrel chest: What causes it?
Barrel chest isn't a disease, but it may indicate an underlying condition.

Barrett's esophagus
Barrett's esophagus — Comprehensive overview covers symptoms, treatment of disorder caused by stomach acid reflux.

Barriers to fitness: Overcoming common problems
Sticking to a regular exercise schedule isn't easy. Get tips for overcoming common barriers.

Bartholin cyst
Bartholin cyst — Comprehensive overview covers symptoms, causes, treatment of this vaginal condition.

Basal cell carcinoma
Basal cell carcinoma — Comprehensive overview covers symptoms, treatment, prevention of this common skin cancer.

Beans and other legumes: Types and cooking tips
Here's help in selecting and preparing beans and other nutritious legumes.

Bedbugs
Bedbugs — Comprehensive overview covers symptoms, treatment, prevention, pictures of these insects and their bites.

Bedsores (pressure sores)
Bedsores — Comprehensive overview covers symptoms, treatment and prevention of these skin and tissue wounds.

Bee stings
Bee stings — Comprehensive overview covers prevention, treatment of bee stings.

Behcet's disease
Behcet's disease — Comprehensive overview covers symptoms and treatment of this inflammatory syndrome.

Being assertive: Reduce stress, communicate better
Assertive behavior — Learn the importance of assertiveness and how to be more assertive.

Bell's palsy
Bell's palsy — Comprehensive overview covers causes, treatment of this usually temporary facial paralysis.

Belly fat in men: Why weight loss matters
Belly fat in men — why it's dangerous and how to get rid of it.

Belly fat in women: How to keep it off
Belly fat — why menopause promotes it and how you can keep it off.

Belly-dancing: A good exercise for weight loss?
The weight-loss benefits of belly-dancing depend on several factors, including exertion level.

Benign paroxysmal positional vertigo (BPPV)
Benign paroxysmal positional vertigo — Comprehensive overview covers symptoms, causes, treatment of intense dizziness episodes.

Bent-over row with dumbbell
The bent-over row targets the back of the shoulder. See how it's done.

Bent-over row with resistance tubing
The bent-over row targets the back of the shoulder. See how it's done.

Best birth control pill: How to choose
Best birth control pill — Weigh the risks and benefits of different birth control pills.

Best sunscreen: Understand sunscreen options
Confused about the best sunscreen? Here's help sorting through the options.

Beta blockers
Beta blockers treat high blood pressure, glaucoma and migraines. Discover more about these drugs.

Beta blockers: Do they cause weight gain?
Weight gain can occur as a side effect of some beta blockers.

Beta blockers: How do they affect exercise?
If you take beta blockers, you may need to adjust your target heart rate.

Bezoars: What foods can cause this digestive problem?
Bezoars are masses of organic and inorganic matter trapped in the digestive system.

Biceps curl with barbell
The biceps curl builds strength in the upper arm. See how it's done.

Biceps curl with dumbbell
The biceps curl builds strength in the upper arm. See how it's done.

Biceps curl with resistance tubing
The biceps curl builds strength in the upper arm. See how it's done.

Biceps curl with weight machine
The biceps curl builds strength in the upper arm. See how it's done.

Bicycle helmet do's and don'ts
A bicycle helmet is essential fitness gear. Make sure you're wearing your helmet correctly.

Bile reflux
Bile reflux — Comprehensive overview covers symptoms, causes, treatment of this gastrointestinal disorder.

Binge-eating disorder
Binge-eating disorder — Comprehensive overview covers symptoms, causes, treatment and coping.

Bioidentical hormones: Are they safer?
There's no evidence that bioidentical hormones are safer than standard hormone therapy for menopause.

Biopsy: Types of biopsy procedures used to diagnose cancer
Biopsy procedures, including needle biopsy and bone marrow biopsy, are used to diagnose cancer.

Bipolar disorder
Bipolar disorder — Comprehensive overview covers symptoms, causes and treatment of this mood disorder.

Bipolar disorder and alcoholism: Are they related?
Bipolar disorder and alcoholism often occur together, though the link isn't clearly understood.

Bipolar medications and weight gain
Bipolar medications and weight gain — Which medications cause it and how to prevent it.

Bipolar treatment: Are bipolar I and bipolar II treated differently?
Bipolar treatment — The same types of treatment are used for bipolar I and bipolar II, but there are some differences.

Bird flu (avian influenza)
Bird flu — Comprehensive overview covers symptoms, causes and prevention of this infectious disease.

Birth center: An option for pregnancy care
Birth center — Understand the pros and cons of delivering a baby at a birth center.

Birth control options: Things to consider
Birth control options — Consider these questions before choosing a method of birth control.

Birth control pill FAQ: Benefits, risks and choices
Birth control pill — Get answers to frequently asked questions about taking the pill.

Birth control pills for acne?
Birth controls pills for acne may be helpful in some women. Learn more.

Birth control pills: Harmful in early pregnancy?
Birth control pills — A Mayo Clinic specialist discusses use of oral contraceptives during pregnancy.

Birth control pills: OK to take indefinitely?
Birth control pills can generally be taken as long as birth control is needed.

Birth control: Can pre-ejaculation fluid cause pregnancy?
Pre-ejaculation fluid can cause pregnancy — which makes withdrawal an unreliable method of birth control.

Bitter orange weight-loss supplements: Do they work?
Bitter orange — Not a safe weight-loss substitute for ephedra.

Black eye
How to administer first aid for a black eye.

Black, hairy tongue
Black, hairy tongue — Comprehensive overview covers causes, symptoms and treatments.

Bladder cancer
Bladder cancer — Comprehensive overview covers symptoms and treatment of bladder cancer.

Bladder control problems in women: How to seek treatment
Bladder control problems can be managed or overcome. The first step is to seek treatment.

Bladder control problems in women: Lifestyle strategies for relief
Bladder control problems may respond to bladder training and avoidance of bladder irritants.

Bladder control problems: Medications for treating urinary incontinence
Bladder control problems — Discover which medications may relieve symptoms of urinary incontinence.

Bladder infection in men: What are the symptoms?
Although women are more likely to get bladder infections, men can get them too.

Bladder outlet obstruction: Causes in men?
Bladder outlet obstruction in men has many possible causes. Find out why prompt diagnosis is important.

Bladder stones
Bladder stones — Comprehensive overview covers symptoms, complications, treatment of mineral buildups in your bladder.

Blastocystis hominis infection
Blastocystis hominis infection — Comprehensive overview covers symptoms, causes, treatment of this parasitic infection.

Bleeding after hysterectomy: What's normal?
Vaginal bleeding after hysterectomy is common for the first four to six weeks.

Bleeding after menopause: Is it normal?
Vaginal bleeding after menopause is not normal and should be evaluated by your doctor.

Blepharitis
Blepharitis — Comprehensive overview covers symptoms, treatment and self-care for this eyelid condition.

Blighted ovum: What causes it?
A blighted ovum is a cause of early pregnancy loss.

Blind loop syndrome
Blind loop syndrome — Comprehensive overview covers symptoms, causes, treatment of this bowel disorder.

Blisters
How to administer first aid for blisters.

Bloating, belching and intestinal gas: How to avoid them
Bloating, belching and gas can be embarrassing and uncomfortable. Here's how to prevent them.

Blocked tear duct
Blocked tear duct — Comprehensive overview covers symptoms, causes, treatment of this tear drainage condition.

Blood clots during menstruation: A concern?
Blood clots during menstruation can be normal.

Blood glucose meter: How to choose
Blood glucose meter — tips on finding a meter that fits your needs and lifestyle.

Blood glucose monitors: What factors affect accuracy?
Blood glucose monitors — Consider these factors when measuring blood sugar levels.

Blood in urine (hematuria)
Blood in urine (hematuria) — Comprehensive overview covers symptoms, causes, treatment of this common problem.

Blood poisoning: What does it mean?
The term "blood poisoning" most often refers to infection in the blood (bacteremia).

Blood pressure chart: What your reading means
This blood pressure chart can help you understand what your blood pressure reading means.

Blood pressure cuff: Does size matter?
Accurate blood pressure readings depend on the proper size blood pressure cuff.

Blood pressure medication: Still necessary if I lose weight?
Losing weight may reduce — or eliminate — your need for blood pressure medication.

Blood pressure medications: Can they raise my triglycerides?
Some blood pressure medications can increase triglyceride levels. Find out more.

Blood pressure readings: Why higher at home?
Blood pressure that consistently measures higher outside the doctor's office is called masked hypertension.

Blood pressure: Can it be higher in one arm?
Generally, a small difference in blood pressure readings between arms isn't a concern.

Blood pressure: Does it have a daily pattern?
Like many body functions, blood pressure has a daily pattern. Find out more.

Blood pressure: Is it affected by cold weather?
Blood pressure generally is higher in the winter than in the summer. Discover why.

Blood sugar testing: Why, when and how
Blood sugar testing is an essential part of diabetes care. Consider the basics.

Blood tests for heart disease
Blood tests offer clues to your heart health. Here's information about these blood tests.

Blood thinners: Can I still get blood clots?
Blood thinners must be taken exactly as directed to prevent blood clots.

Blood type diet: Does it work?
Should blood type influence your food choices? Find out.

BMI calculator
BMI calculator — Use this tool to calculate adult or child BMI.

Body dysmorphic disorder
Body dysmorphic disorder — Comprehensive overview covers symptoms, causes, treatment of this mental disorder.

Body fat analyzers: How accurate are they?
Body fat can be measured with hand-held body fat analyzers, but accuracy varies.

Body fat: What happens to lost fat?
Body fat breaks down during a series of complex metabolic processes.

Body lice
Body lice — Comprehensive overview covers symptoms, how to get rid of this itchy infestation.

Boils and carbuncles
Boils and carbuncles — Comprehensive overview covers symptoms, causes, treatment, prevention of these pus-filled bumps.

Bone and joint problems associated with diabetes
If you have diabetes, you're at increased risk of various bone and joint disorders.

Bone cancer
Bone cancer — Comprehensive overview covers signs, symptoms, causes, treatment of primary bone cancer.

Bone spurs
Bone spurs — Comprehensive overview covers symptoms, causes, treatment of projections along edges of bones.

Borderline personality disorder
Borderline personality disorder — Comprehensive overview covers symptoms, causes, treatment and self-care strategies.

Botox injections: Can they relieve arthritis pain?
It's unclear whether Botox injections can help arthritis pain, but early studies are promising.

Botulism
Botulism — Comprehensive overview covers causes, symptoms, treatments in adults and infants.

Bowen therapy: Effective for back pain?
Bowen therapy isn't recognized as an evidence-based treatment for low back pain.

Brachial plexus injury
Brachial plexus injury — Comprehensive overview covers diagnosis, treatment of this potentially disabling shoulder trauma.

Bradycardia
Bradycardia — Comprehensive overview of symptoms, diagnosis and treatment of a slow heartbeat.

Brain aneurysm
Brain aneurysm — Comprehensive overview covers symptoms, treatment of this potentially life-threatening disorder.

Brain AVM (arteriovenous malformation)
Brain AVM (arteriovenous malformation) — Comprehensive overview covers causes, symptoms and treatments.

Brain tumor
Brain tumor — Comprehensive overview covers signs, symptoms and treatments, including surgery.

Breakfast: Why is it so important to weight control?
Breakfast — See how regularly eating a healthy breakfast controls weight.

Breast cancer
Breast cancer — Comprehensive overview covers symptoms, causes, diagnosis, treatment of breast cancer in women.

Breast cancer chemoprevention: Medicines that reduce breast cancer risk
Breast cancer chemoprevention — drugs for breast cancer prevention in high-risk women.

Breast cancer prevention: Lifestyle factors that can reduce risk
Breast cancer prevention — More exercise, less alcohol and other measures reduce breast cancer risk.

Breast cancer radiation: Can it cause dry skin?
Dry skin following breast cancer radiation is fairly common. These suggestions may help.

Breast cancer staging
Breast cancer staging helps predict your likely response to different breast cancer treatments.

Breast cancer types: What your type means
Understand types of breast cancer and how they differ.

Breast cysts
Breast cysts — Comprehensive overview covers symptoms, causes and treatment of this benign breast condition.

Breast cysts: What role does caffeine play?
Some research suggests an indirect link between caffeine and breast cysts.

Breast implants: Do they interfere with mammograms?
Having breast implants may affect your mammogram.

Breast implants: Saline vs. silicone
Breast implants — A Mayo Clinic specialist discusses implants for breast augmentation or reconstruction.

Breast lump: Early evaluation is essential
Breast lump — Find out how a breast lump is evaluated for breast cancer.

Breast pain
Breast pain — Comprehensive overview covers possible causes, treatments and self-care remedies.

Breast-feeding while pregnant: Is it safe?
For most women, it's possible to safely continue breast-feeding while pregnant.

Bridge with fitness ball
You can do many core exercises with a fitness ball. See the bridge.

Broken ankle/broken foot
Broken ankle/broken foot — Comprehensive overview covers symptoms, diagnosis, treatment of these common fractures.

Broken arm
Broken arm — Comprehensive overview covers symptoms, diagnosis and treatment of this common fracture.

Broken collarbone
Broken collarbone — Comprehensive overview covers causes, symptoms and treatment of this common injury.

Broken heart syndrome
Broken heart syndrome — Comprehensive overview covers symptoms, causes of this heart muscle condition.

Broken leg
Broken leg — Comprehensive overview covers symptoms, diagnosis and treatment of this type of fracture.

Broken nose
Broken nose — Comprehensive overview covers symptoms, causes and treatments of a nasal fracture.

Broken ribs
Broken ribs — Comprehensive overview covers symptoms, causes and treatment of rib bone fractures.

Broken toe
Broken toe — Comprehensive overview covers symptoms, treatment of toe fracture.

Broken wrist/broken hand
Broken wrist/broken hand — Comprehensive overview covers symptoms, diagnosis, treatment of these types of fractures.

Bronchiolitis obliterans with organizing pneumonia (BOOP)
Bronchiolitis obliterans with organizing pneumonia (BOOP) affects your lungs' small airways and air-exchange sacs.

Bronchitis
Bronchitis — Comprehensive overview covers symptoms, causes, treatment of this potentially serious lung infection.

Brucellosis
Brucellosis — Comprehensive overview covers symptoms, transmission and treatment of this serious infectious disease.

Bruise
How to administer first aid for a bruise.

Bruxism/teeth grinding
Bruxism/teeth grinding — Comprehensive overview covers symptoms, causes, treatment of this potentially damaging condition.

Buerger's disease
Buerger's disease — Comprehensive overview covers symptoms of this disease that affects your blood vessels.

Bulimia nervosa
Bulimia — Comprehensive overview covers symptoms, treatment and coping with this eating disorder.

Bullous pemphigoid
Bullous pemphigoid — Comprehensive overview covers symptoms, treatment of this blistery skin condition.

Bump on the head: When is it a serious head injury?
Even a minor injury to the scalp or forehead can cause a large lump.

Bundle branch block
Bundle branch block — Comprehensive overview covers symptoms and causes of this heart condition.

Bunions
Bunions — Comprehensive overview covers symptoms, causes, treatment of this sometimes painful foot condition.

Burning mouth syndrome
Burning mouth syndrome — Comprehensive overview covers symptoms, causes, treatment of this painful oral condition.

Burns
How to recognize and administer first aid for minor to serious burns.

Burns
Burns — Comprehensive overview covers symptoms, treatments and self-care tips.

Bursitis
Bursitis — Comprehensive overview covers symptoms, causes, treatment of this painful joint area inflammation.

Butter vs. margarine: Which is better for my heart?
Margarine usually tops butter for heart health. But not all margarines are created equal.

Buying beef? A guide to choosing the leanest cuts
Government food-labeling laws determine which cuts of beef can be called "lean."

Buying prescription drugs online: The do's and don'ts
Buying prescription drugs online? Stay safe with these do's and don'ts.

Byetta: Can diabetes drug also help me lose weight?
Byetta improves blood sugar control and appears to have an important side benefit — weight loss.

C-section — What to expect
Mayo Clinic doctors describe what to expect during a C-section.

C-sections: Is there a limit?
Repeat C-sections are common — but each C-section is generally more complicated than the last.

C. difficile
C. difficile — Comprehensive overview covers symptoms, treatment and causes of Clostridium difficile bacterial infection.

CA 125 test: A screening test for ovarian cancer?
Learn why doctors generally don't recommend a CA 125 test for ovarian cancer screening.

Cachexia in advanced cancer: What's the best treatment?
Few treatments exist for cachexia, or muscle wasting, during the advanced stages of cancer.

Caesar salad with grilled chicken
Caesar salad with grilled chicken — See how to prepare this healthy recipe.

Caffeine and depression: Is there a link?
In some people, caffeine can affect mood. Here's why.

Caffeine content for coffee, tea, soda and more
Caffeine content — Find out how much caffeine is in coffee, tea, soda and sports drinks.

Caffeine: Can it help me lose weight?
Caffeine — It may help with slight weight loss, but watch the risks.

Caffeine: Does it affect blood sugar?
Should you limit caffeine if you have diabetes? Learn how caffeine affects blood sugar.

Caffeine: How does it affect blood pressure?
Caffeine can temporarily increase blood pressure, but its long-term effects on blood pressure are unclear.

Caffeine: How much is too much?
Caffeine — You may like caffeine's effects, but too much can be harmful.

Caffeine: Is it dehydrating or not?
Caffeinated drinks usually won't dehydrate you, but water is still your best option.

Calcium channel blockers
Calcium antagonists, also called calcium channel blockers, treat conditions such as high blood pressure.

Calcium supplements: A risk factor for heart attack?
A recent study questioned the protective effect of calcium supplements on cardiovascular disease.

Calcium supplements: Do men need them too?
Some men — particularly older men — may benefit from calcium supplements.

Calcium supplements: Do they interfere with blood pressure drugs?
In large amounts, calcium supplements may interfere with certain blood pressure medications.

Calcium supplements: Should they be taken with meals?
Some calcium supplements should be taken with meals, others on an empty stomach.

Calcium supplements: Which type is best?
When choosing calcium supplements, consider how much elemental calcium the supplements contain.

Calf raise with dumbbell
The calf raise targets the calf muscles in the legs. See how it's done.

Calorie calculator
Calorie calculator — calculate how many daily calories you need to maintain your weight.

Calories in sushi: What are the low-cal options?
Consider these tips for reducing calories in sushi dishes.

Can vitamins help prevent a heart attack?
There's mixed evidence on whether vitamins can prevent heart disease. Find out more.

Can whole-grain foods lower blood pressure?
Whole-grain foods — Can they lower blood pressure?

Cancer
Cancer — Comprehensive overview covers cancer symptoms, causes and treatments.

Cancer blood tests: Lab tests used in cancer diagnosis
Cancer blood tests and other laboratory tests may be used in cancer diagnosis.

Cancer causes: Popular myths about the causes of cancer
Cancer causes — See why these popular myths about cancer causes are wrong.

Cancer diagnosis: 11 tips for coping
Cancer diagnosis — 11 ways to cope with this life-changing news.

Cancer diagnosis? Advice for dealing with what comes next
Cancer diagnosis — Mayo Clinic cancer specialist offers advice for coping with a cancer diagnosis.

Cancer fatigue: Why it occurs and how to cope
Cancer fatigue that occurs during cancer treatment is common. You can take steps to lessen your cancer fatigue.

Cancer pain: Relief is possible
Cancer pain relief questions answered by a Mayo Clinic cancer specialist.

Cancer prevention: 7 steps to reduce your risk
Cancer prevention — What to do to reduce your risk of cancer.

Cancer risk: What the numbers mean
Cancer risk — Find out how to interpret the latest news about cancer risk.

Cancer surgery: Physically removing cancer
Cancer surgery — common cancer treatment for breast cancer, prostate cancer, colon cancer and others.

Cancer survival rate: What it means for your prognosis
Cancer survival rate — Find out what it means and how it applies to you.

Cancer survivors: Care for your body after treatment
Cancer survivors can improve their health after cancer treatment with simple changes.

Cancer survivors: Managing late effects of cancer treatment
Cancer survivors can experience side effects long after their cancer treatment ends.

Cancer survivors: Managing your emotions after cancer treatment
Cancer survivors may experience a variety of emotions upon completing cancer treatment.

Cancer survivors: Reconnecting with loved ones after treatment
Cancer survivors sometimes must redevelop relationships with friends and family after cancer treatment.

Cancer treatment decisions: 5 steps to help you decide
Get involved in your cancer treatment by working with your doctor to evaluate options.

Cancer treatment for men: Possible sexual side effects
Cancer treatment side effects can make sex more difficult.

Cancer treatment for women: Possible sexual side effects
Cancer treatment can cause physical changes in women that make having sex more difficult.

Cancer treatment myths: Any truth to these common beliefs?
Cancer treatment — Find out the truth behind these 10 common cancer treatment myths.

Candida cleanse: What does it treat?
Candida cleanse diets allegedly remove fungus from your intestines by eliminating its food source.

Canker sore
Canker sore — Comprehensive overview covers causes, treatment and prevention of these painful mouth sores.

Canned food: How long can you safely keep it?
Commercially prepared canned food has a fairly long shelf life.

Canned pumpkin: Better than fresh?
Canned pumpkin — Pumpkin provides lots of nutrients, whether canned or fresh.

Canola oil: Does it contain toxins?
Health concerns regarding canola oil that are being circulated on the Internet are unfounded.

Carbohydrate counting and diabetes: Looking beyond carbs
Carbohydrate counting is a method of controlling the amount of carbohydrates you eat.

Carbon monoxide poisoning
Carbon monoxide poisoning — Comprehensive overview covers symptoms, treatment, prevention of this deadly danger.

Carcinoid syndrome
Carcinoid syndrome — Comprehensive overview covers symptoms, causes, treatment of condition caused by carcinoid tumors.

Carcinoid tumors
Carcinoid tumors — Comprehensive overview covers symptoms, diagnosis, treatment of these rare, slow-growing cancerous tumors.

Cardiac asthma: What causes it?
Cardiac asthma refers to wheezing that's a sign of heart failure.

Cardiogenic shock
Cardiogenic shock — Comprehensive overview covers symptoms and treatment of this dangerous heart attack complication.

Cardiomyopathy
Cardiomyopathy — Comprehensive overview covers symptoms and treatment of this heart muscle condition.

Cardiopulmonary resuscitation (CPR)
First-aid instructions for cardiopulmonary resuscitation (CPR).

Caregiver depression: Prevention counts
Caregiver depression — Find out how to prevent and cope with caregiver depression.

Caregiver stress: Tips for taking care of yourself
Fight caregiver stress and prevent burnout by taking time to take care of yourself.

Caregiving: Tips for long-distance caregivers
Caregiving — How to care for a loved one from afar.

Carotid angioplasty and stenting
Carotid angioplasty and stenting — See how this stroke treatment is done.

Carotid artery disease
Carotid artery disease — Comprehensive overview covers symptoms, treatment, prevention of this blood vessel condition.

Carpal tunnel exercises: Can they relieve symptoms?
Carpal tunnel exercises may be helpful, but they aren't used alone.

Carpal tunnel surgery — endoscopic
Carpal tunnel surgery with endoscope — watch how it's done.

Carpal tunnel surgery — which option's safest?
Carpal tunnel surgery options differ slightly in terms of risk. A Mayo Clinic surgeon explains.

Carpal tunnel surgery, recovery and healing
Carpal tunnel surgery — How do you feel during recovery?

Carpal tunnel symptoms — nonsurgical treatment
Nonsurgical treatments can help improve carpal tunnel syndrome, a Mayo Clinic surgeon explains.

Carpal tunnel syndrome
Carpal tunnel syndrome — Comprehensive overview covers symptoms, causes, treatment, prevention of this painful condition.

Carpal tunnel syndrome — results of surgery
Carpal tunnel surgery has immediate and delayed results, a Mayo Clinic surgeon explains.

Carpal tunnel treatment — doctor guides decisions
Carpal tunnel treatment decisions — Mayo Clinic surgeon Peter Amadio, M.D., discusses doctor's role.

Castleman disease
Castleman disease — Comprehensive overview covers symptoms, causes, treatment of this lymphatic disorder.

Cataract surgery
Cataract surgery replaces your eye's lens.

Cataract surgery: Does the artificial lens deteriorate over time?
In cataract surgery, the clouded lens is removed and replaced with a clear, artificial lens.

Cataracts
Cataracts — Comprehensive overview covers symptoms, causes and treatments, including cataract removal.

Catatonic schizophrenia
Catatonic schizophrenia — Comprehensive overview covers symptoms, causes, treatment of this type of schizophrenia.

Cavities/tooth decay
Cavities — Comprehensive overview covers symptoms, treatment and prevention of toothache pain and tooth decay.

Celiac disease
Celiac disease — Comprehensive overview covers symptoms, treatment of this digestive condition affecting children, adults.

Celiac disease diet: How do I get enough grains?
Getting enough grains in your diet can be challenging if you have celiac disease.

Celiac disease: Can gluten be absorbed through the skin?
Gluten can't be absorbed through the skin, although this is a common misperception. Learn more.

Cell phones and cancer: What's the risk?
The possible connection between cell phones and cancer is controversial.

Cellulite
Cellulite — Comprehensive overview covers causes and treatments of this extremely common skin condition.

Cellulitis
Cellulitis — Comprehensive overview covers causes, treatment and prevention of this potentially serious skin infection.

Cellulitis infection: Is it contagious?
Cellulitis — a common, potentially serious bacterial skin infection — is not directly contagious.

Central sleep apnea
Central sleep apnea — Comprehensive overview covers symptoms, treatment of this uncommon sleep, breathing disorder.

Central-acting agents
Central-acting agents, also called central adrenergic inhibitors, treat several conditions, including high blood pressure.

Cerebral palsy
Cerebral palsy — Comprehensive overview covers symptoms, causes and treatment of this movement disorder.

Cervical cancer
Cervical cancer — Comprehensive overview covers signs, symptoms, causes, treatment and the cervical cancer vaccine.

Cervical cancer: Can I get it if I've never had sex?
Most cervical cancer is associated with human papillomavirus (HPV), a sexually transmitted virus.

Cervical cysts: Can they be cancerous?
Most cervical cysts cause no signs or symptoms and require no treatment.

Cervical dysplasia: Is it cancer?
Cervical dysplasia indicates abnormal cells found on the cervix.

Cervical dystonia
Cervical dystonia — Comprehensive overview covers causes, treatment of this painful contraction of neck muscles.

Cervical spondylosis
Cervical spondylosis — Comprehensive overview covers symptoms, treatment of neck osteoarthritis.

Cervicitis
Cervicitis — Comprehensive overview covers symptoms, treatment, prevention of this female infection.

Chagas disease
Chagas disease — Comprehensive overview covers symptoms, causes, treatments of this parasitic infection.

Chantix: Stop-smoking medication to help you quit
Varenicline (Chantix) — Learn about side effects and benefits of this stop-smoking drug.

Chapped lips: What's the best remedy?
Chapped lips can have several causes. Learn how to prevent and treat chapped lips.

Charcot-Marie-Tooth disease
Charcot-Marie-Tooth disease — Comprehensive overview covers symptoms, treatment of this group of peripheral nerve disorders.

Chemical burns
How to administer first aid for a chemical burn.

Chemical splash in the eye
How to administer first aid for a chemical splash in the eye.

Chemo brain
Chemo brain — Comprehensive overview covers symptoms, treatment of memory changes associated with cancer treatment.

Chemotherapy and hair loss: What to expect during treatment
Chemotherapy and hair loss — what to expect from cancer treatment and how to cope.

Chemotherapy and sex: Is sexual activity OK during treatment?
Chemotherapy and sex aren't mutually exclusive, as long as you're feeling up to it.

Chemotherapy nausea and vomiting: Prevention is best defense
Cancer chemotherapy can cause nausea and vomiting. Learn how to prevent these side effects.

Chemotherapy side effects: A cause of heart disease?
Chemotherapy side effects may include an increased risk of heart disease, especially cardiomyopathy.

Chest pain
Chest pain — Comprehensive overview covers causes, diagnosis, treatment of problems this symptom may signal.

Chest pain
What first-aid steps to take if you or someone else has chest pain.

Chest press with dumbbell
The chest press exercise targets the chest muscles. See how it's done.

Chest press with weight machine
The chest press exercise targets the chest muscles. See how it's done.

Chewing tobacco: Not a safe alternative to cigarettes
Chewing tobacco — Chewing tobacco and other forms of smokeless tobacco pose numerous health risks.

Chiari malformation
Chiari malformation — Comprehensive overview covers symptoms, causes, treatment of this brain disorder.

Chickenpox and pregnancy: What are the concerns?
Chickenpox and pregnancy — If chickenpox develops during pregnancy, the risks depend on the timing.

Chilblains
Chilblains — Comprehensive overview covers symptoms, causes, treatment of this condition.

Child abuse: A cause of borderline personality disorder?
Borderline personality disorder — Can child abuse cause it?

Childbirth education: Get ready for labor and delivery
Childbirth education classes — Know what to expect during labor and delivery.

Chlamydia
Chlamydia — Comprehensive overview includes symptoms, treatment and testing for men and women.

Chocolate: Does it impair calcium absorption?
Chocolate contains oxalate — a naturally occurring compound in cocoa beans — which can inhibit calcium absorption.

Choking
First-aid instructions for choking.

Cholecystitis
Cholecystitis — Comprehensive overview covers causes, symptoms, complications and treatment of gallbladder inflammation.

Cholera
Cholera — Comprehensive overview covers symptoms, causes, treatment and prevention of this life-threatening bacterial disease.

Cholestasis of pregnancy
Cholestasis of pregnancy — Comprehensive overview covers causes and treatment of itching during pregnancy.

Cholesterol level: Can it be too low?
A high cholesterol level is unhealthy — but very low cholesterol may pose risks, too.

Cholesterol levels: What numbers should you aim for?
Got the results from your cholesterol test? Here's what your cholesterol levels mean.

Cholesterol medications: Consider the options
Cholesterol medications may help lower your cholesterol. Here are some cholesterol medication options.

Cholesterol ratio: Is it important?
Cholesterol ratio can be used to predict heart disease risk.

Cholesterol test kits: Are they accurate?
Home cholesterol test kits are widely available — but they don't replace clinical cholesterol tests.

Cholesterol-lowering supplements: Lower your numbers without prescription medication
Diet and exercise are proven ways to reduce cholesterol. Cholesterol-lowering supplements may help, too.

Cholesterol: Top 5 foods to lower your numbers
The foods you eat can help lower your cholesterol. Here are five top choices.

Chondromalacia patella
Chondromalacia patella — Comprehensive overview covers symptoms, treatment of this knee condition common among runners.

Choosing blood pressure medications
High blood pressure medications — Here are some options for high blood pressure medications.

Choosing sunglasses: Is UV protection important?
When it comes to sunglasses, UV protection matters. Here's why.

Chronic bladder infection: Is there a cure?
Chronic bladder infection is a painful, frustrating problem. Learn about causes and treatments.

Chronic cough
Chronic cough — Comprehensive overview covers causes, diagnosis and treatment of this frustrating condition.

Chronic daily headaches
Chronic daily headaches — Comprehensive overview covers causes, treatment of this debilitating type of headache.

Chronic diarrhea: A concern after gallbladder removal?
Diarrhea is fairly common after gallbladder removal. Find out what to expect.

Chronic exertional compartment syndrome
Chronic exertional compartment syndrome — Comprehensive overview covers symptoms, causes, treatment of this neuromuscular condition.

Chronic fatigue syndrome
Chronic fatigue syndrome — Comprehensive overview covers symptoms, causes, prevention, treatment of this complex disorder.

Chronic fatigue: Can natural remedies boost my energy?
Find out what the research says about natural remedies for chronic fatigue.

Chronic hives (urticaria)
Chronic hives — Comprehensive overview covers symptoms, causes, treatment of this allergic condition.

Chronic kidney failure
Chronic kidney failure — Comprehensive overview covers symptoms, causes of gradual loss of kidney function.

Chronic lymphocytic leukemia
Chronic lymphocytic leukemia — Comprehensive overview covers symptoms and treatment of this cancer.

Chronic myelogenous leukemia
Chronic myelogenous leukemia — Comprehensive overview covers causes, treatments and coping with this blood cancer.

Chronic pain can interfere with sexuality
You can have a satisfying sexual relationship in spite of your chronic pain.

Chronic pelvic pain
Chronic pelvic pain — Comprehensive overview covers symptoms, treatments of pain in your pelvic region.

Chronic sinusitis
Chronic sinusitis — Comprehensive overview covers symptoms, causes and treatment of this painful respiratory condition.

Chronic stress: Can it cause depression?
Chronic stress — A possible factor in the development of depression.

Churg-Strauss syndrome
Churg-Strauss syndrome — Comprehensive overview covers symptoms, causes, treatment of this inflammatory disease.

Cigar smoking: Safer than cigarette smoking?
Cigar smoking is often considered less dangerous than cigarette smoking, but this isn't true.

Cirrhosis
Cirrhosis — Comprehensive overview covers symptoms, treatment of this life-threatening condition that scars the liver.

Claudication
Claudication — Comprehensive overview covers symptoms and treatment of this painful circulatory condition.

Clinical trials: A chance to try evolving therapies
Clinical trials help researchers discover new treatments. Learn more about how clinical trials work.

Clubfoot
Clubfoot — Comprehensive overview covers diagnosis, treatment of this common birth defect of the foot.

Cluster headache
Cluster headache — Comprehensive overview covers symptoms, causes, treatment and prevention of this painful condition.

Cochlear implants: Who are they for?
Cochlear implants can help improve hearing if you have severe to profound nerve deafness.

Coconut oil and weight loss: Does it work?
Researchers haven't found a connection between coconut oil and weight loss.

Coconut oil: Can it cure hypothyroidism?
Coconut oil has been touted by some as a cure for hypothyroidism. Truth or hype?

Coenzyme Q10: Can it prevent statin side effects?
The use of coenzyme Q10 to prevent statin side effects is controversial.

Coffee and health: What does the research say?
When consumed in moderation, coffee can be part of a healthy diet.

Coffee calories: Sabotaging your weight-loss plans?
Plain coffee is low in calories — but the "extras" add up.

Cold or allergy: Which is it?
Learn how to tell the difference between common cold and allergy symptoms.

Cold remedies: What works, what doesn't, what can't hurt
Cold remedies: Some work, some don't. We help you tell the difference.

Cold sore
Cold sore — Comprehensive overview covers symptoms, causes, treatment, prevention of this common lip sore.

Cold symptoms: Does drinking milk increase phlegm?
Drinking milk may thicken phlegm — but it doesn't increase phlegm production.

Cold urticaria
Cold urticaria — Comprehensive overview covers symptoms, treatment of this allergic skin reaction caused by cold.

Collagenous colitis, lymphocytic colitis
Collagenous colitis, lymphocytic colitis — Comprehensive overview covers symptoms, causes, treatments of these intestinal disorders.

Colloidal silver: Is it safe or effective?
Colloidal silver — debunking the health claims.

Colon cancer
Colon cancer — Comprehensive overview covers signs, symptoms and treatment of colon and rectal cancers.

Colon cancer screening: At what age can you stop?
Colon cancer screening may have an upper age limit of effectiveness. What is it?

Colon cancer screening: Weighing the options
Colon cancer screening — Understand the pros and cons of specific colon cancer screening tests.

Colon cleansing: Is it helpful or harmful?
Colon cleansing — what to know before you try detoxification.

Colon polyps
Colon polyps — Comprehensive overview covers symptoms, treatment of a condition that sometimes becomes cancerous.

Colonoscopy
Colonoscopy — See what takes place during a colonoscopy.

Color your diet: Fresh fruit 10 ways
With minimal effort, you can transform fresh fruit into interesting and delicious creations. Here's how.

Coma
Coma — Comprehensive overview covers symptoms, causes of unconsciousness often resulting from brain trauma.

Combined reuptake inhibitors and receptor blockers
Combined inhibitors and blockers — Here's how these dual-action antidepressants work and possible side effects.

Common cold
Common cold — Comprehensive overview covers symptoms, causes and care of this common infection.

Common warts
Common warts — Comprehensive overview covers causes, treatment, self-care of this infectious skin condition.

Compassionate use of experimental drugs: Who qualifies?
Compassionate use is a federal program that allows access to experimental drugs in certain situations.

Complementary and alternative medicine: What is it?
Alternative medicine encompasses many different therapies. Get the basics here.

Complex regional pain syndrome
Complex regional pain syndrome — Comprehensive overview covers diagnosis, treatment of this nervous system problem.

Complicated grief
Complicated grief — Comprehensive overview covers symptoms, treatment and coping skills.

Compulsive gambling
Compulsive gambling — Comprehensive overview covers symptoms, causes and treatments for this impulse-control disorder.

Compulsive sexual behavior
Compulsive sexual behavior — Comprehensive overview covers symptoms, causes, treatments of this impulse control disorder.

Concussion
Concussions — Comprehensive overview covers symptoms, causes and treatment of this common brain injury.

Conflicting mammogram results: What can I do?
Abnormal mammogram results don't necessarily mean you have breast cancer.

Congenital heart defects in children
Congenital heart defects — Comprehensive overview covers symptoms, causes and treatments of heart defects.

Congenital heart disease in adults
Congenital heart disease in adults — Comprehensive overview covers treatments and complications of heart defects.

Considering suicide? How to stay safe and find treatment
Suicide isn't a solution. Create a plan to keep yourself safe.

Constipation
Constipation — Comprehensive overview covers symptoms, treatment, prevention of this uncomfortable condition.

Contact dermatitis
Contact dermatitis — Comprehensive overview covers causes, symptoms and treatments of this itchy rash.

Contact lenses: What to know before you buy
Contact lenses aren't risk-free. Nor are they all alike. What's best for you?

Conversion disorder
Conversion disorder — Comprehensive overview covers symptoms, treatment of this psychological condition.

COPD
COPD (chronic obstructive pulmonary disease) — Comprehensive overview covers symptoms, treatment of this lung disease.

Coping with anxiety: Can diet make a difference?
Coping with anxiety can be difficult. Find out how dietary changes may help.

Coping with pain after breast surgery
How to cope with pain after breast surgery.

Coping with pregnancy loss
Pregnancy loss is devastating. Here are some ways to cope with your grief.

Cord blood banking: Should I consider it?
Cord blood banking — Understand the difference between public and private cord blood donation.

Core exercises: 7 reasons to strengthen your core muscles
Core exercises strengthen your abs and other core muscles for better balance and stability.

Cornea transplant
Video shows how full-thickness and partial-thickness cornea transplants are performed.

Corneal abrasion (scratch)
How to administer first aid for a corneal abrasion.

Corns and calluses
Corns and calluses — Comprehensive overview covers causes, symptoms and treatments.

Coronary angioplasty
Coronary angioplasty and stenting open narrowed arteries. Watch this video to find out more.

Coronary artery disease
Coronary artery disease — Comprehensive overview covers symptoms, treatment of this serious heart condition.

Coronary artery disease: Angioplasty or bypass surgery?
The best treatment for coronary artery disease varies, depending on the circumstances.

Coronary artery spasm: Cause for concern?
Coronary artery spasm is a sudden, temporary tightening of the muscles in the artery wall.

CortiSlim: Can cortisol blockers help with weight loss?
Makers of cortisol blockers want you to believe that stress hormones make you fat.

Cosmetic surgery: What to know beforehand
Cosmetic surgery — Understand the benefits, risks and limitations of undergoing plastic surgery.

Costochondritis
Costochondritis — Comprehensive overview covers causes, treatment of this usually harmless chest wall pain.

Cough headaches
Cough headaches — Comprehensive overview covers causes, symptoms and treatments of this unusual headache type.

Counting calories: Get back to weight-loss basics
Calories count — Try these calorie-cutting basics to get a handle on your weight.

CPAP machines: Tips for avoiding 10 common problems
Making small adjustments to your CPAP device can help you use it more comfortably.

Craving and chewing ice: A sign of anemia?
Craving and chewing ice (pagophagia) is often associated with iron deficiency anemia.

Creutzfeldt-Jakob disease
Creutzfeldt-Jakob disease — Comprehensive overview covers definition, symptoms and diagnosis of CJD.

Crohn's disease
Crohn's disease — Comprehensive overview covers symptoms and treatment of this inflammatory bowel disease.

Crohn's disease symptom: Is fatigue common?
Fatigue is a fairly common Crohn's disease symptom. Learn about causes, treatments.

Cross-training: Rev up your exercise program with variety
Cross-training combines two or more types of physical activity. Mix it up today!

CRP level: A risk factor for heart disease?
CRP level: Does a high C-reactive protein level increase your risk for heart disease?

Cryptosporidium infection
Cryptosporidium infection — Comprehensive overview covers signs, symptoms, diagnosis and treatment of this diarrheal disease.

CT scan
Computerized tomography (CT) is a safe, painless way to obtain detailed images of the brain.

CT scans: Are they safe?
Is the information gained from CT scans worth a small potential increase in cancer risk?

Cupping therapy: Can it relieve fibromyalgia pain?
Cupping is one of many alternative therapies used to help relieve fibromyalgia pain.

Curcumin: Can it slow cancer growth?
Some research suggests that curcumin may help prevent or treat cancer.

Cushing's syndrome
Cushing's syndrome — Comprehensive overview covers symptoms, treatment of this disorder caused by excess cortisol.

Cuts and scrapes
How to administer first aid for a cut or scrape.

Cyclic vomiting syndrome
Cyclic vomiting syndrome — Comprehensive overview covers symptoms, diagnosis, treatment of this recurrent disorder.

Cyclospora infection
Cyclospora infection — Comprehensive overview covers symptoms, causes, treatment of this food-borne intestinal illness.

Cyclothymia (cyclothymic disorder)
Cyclothymia — Comprehensive overview covers symptoms, causes and treatment of this bipolar-like mood disorder.

Cystic fibrosis
Cystic fibrosis — Comprehensive overview covers causes, symptoms, treatment of this inherited condition.

Cystitis
Cystitis — Comprehensive overview covers symptoms, causes, treatment, prevention of bladder inflammation.

Cystocele
Cystocele — Comprehensive overview covers symptoms, causes, treatment of this condition, also called prolapsed bladder.

Cytomegalovirus (CMV) infection
Cytomegalovirus (CMV) infection — Comprehensive overview covers symptoms, treatment of condition that may affect newborns.

Daily aspirin therapy: Understand the benefits and risks
Daily aspirin therapy can be lifesaving or life-threatening. Discover if you're a good candidate.

Dandruff
Dandruff — Comprehensive overview covers causes, treatment of this sometimes embarrassing, flaky skin disorder.

DASH diet: Guide to recommended servings
DASH diet: Use this table of recommended servings to plan meals.

DASH diet: Healthy eating to lower your blood pressure
The DASH diet — Follow this eating approach for better blood pressure and other health benefits.

DASH diet: Top 5 tips for dining out
DASH diet — Here are five ways to avoid hidden fat and salt while dining out.

DASH diet: Top 5 tips for shopping and cooking
The DASH diet may open new doors for your health — and your palate.

De Quervain's tenosynovitis
De Quervain's tenosynovitis — Comprehensive overview of symptoms, treatment of this painful wrist condition.

Deciding which depression treatment to try first
Kristin Vickers Douglas, Ph.D., discusses which depression treatment option you should try first.

Deep vein thrombosis (DVT)
Deep vein thrombosis — Comprehensive overview covers symptoms, treatment, prevention of this blood-clotting disorder.

Dehydration
Dehydration — Comprehensive overview covers symptoms, causes, treatment of significant loss of your body's fluids.

Delayed ejaculation
Delayed ejaculation — Comprehensive overview covers symptoms, causes, treatment of delayed or absent ejaculation.

Delaying your period through oral contraceptives
Birth control pills taken on an adjusted schedule can delay your period.

Delirium
Delirium — Comprehensive overview covers delirium symptoms, causes, treatment and prevention.

Demyelinating disease: What causes it?
Demyelinating disease is any condition that results in damage to the myelin sheath.

Dengue fever
Dengue fever — Comprehensive overview covers treatment, symptoms and risk factors of this mosquito-borne illness.

Denial: Learn to cope with painful situations
Denial — Understand denial and its impact in the face of stress, illness or addiction.

Dental fillings: Should metal fillings be replaced with composite?
If metal dental fillings are defective or show decay, they should be replaced.

Dental floss vs. water pick: Which is better?
Standard dental floss is the most effective tool for cleaning between the teeth.

Dental night guards: Can they help prevent teeth grinding?
Dental night guards — Here's what mouth guards can and can't do for teeth grinding.

Denture care: How do I clean dentures?
Denture care — Here are best practices for taking care of your dentures.

Depersonalization disorder
Depersonalization disorder — Comprehensive overview covers symptoms, treatment of this psychological condition.

Depression (major depression)
Depression — Comprehensive overview covers symptoms, treatment and coping with this mood disorder.

Depression and anxiety: Can I have both?
Depression and anxiety often occur at the same time. Fortunately, their treatments are similar.

Depression and anxiety: Exercise eases symptoms
Depression symptoms often improve with exercise. Here are tips to help you get started.

Depression in women: Understanding the gender gap
Depression in women — Learn what factors may set the stage for their increased risk.

Depression self-assessment
Take this depression self-assessment to help learn whether you have symptoms of depression.

Depression: Supporting a family member or friend
Depression — How to help a family member or friend dealing with this serious mental health condition.

Dermatitis
Dermatitis — Comprehensive overview covers symptoms, causes and treatments of this itchy skin disorder.

Dermatographia
Dermatographia — Comprehensive overview covers symptoms, treatment of this skin condition.

Dermatomyositis
Dermatomyositis — Comprehensive overview covers symptoms, diagnosis, treatment of this inflammatory muscle disease.

Detox diets: Do they work?
Detox diets are popular, but they're not scientifically proven — and may have harmful side effects.

Detox foot pads: Do they really work?
Detox foot pads — Beware of claims about removing toxins from your body.

Deviated septum
Deviated septum — Comprehensive overview covers symptoms, causes, treatments of this nasal condition.

DHEA: Evidence for anti-aging claims is weak
DHEA — A Mayo Clinic specialist answers questions about the popular anti-aging supplement.

Diabetes
Diabetes — Comprehensive overview covers symptoms, causes and treatments of several types of diabetes.

Diabetes and Alzheimer's linked
Diabetes increases your risk of Alzheimer's. Reduce this risk with diet and exercise.

Diabetes and dental care: Guide to a healthy mouth
Diabetes can take a toll on your teeth and gums. Take prevention seriously.

Diabetes and depression: What's the link?
Diabetes and depression can occur together. Here's what you need to know.

Diabetes and exercise: When to monitor your blood sugar
Diabetes and exercise: Prevent problems by checking blood sugar before, during and after exercise.

Diabetes and menopause: A twin challenge
Diabetes and menopause — what to expect, how to stay in control.

Diabetes care: 10 ways to avoid diabetes complications
Diabetes care is a lifelong responsibility. Consider 10 strategies to prevent diabetes complications.

Diabetes diet: Create your healthy-eating plan
Diabetes diet — A healthy-eating plan can help you keep your blood sugar under control.

Diabetes diet: Should I avoid sweet fruits?
It's a common myth that you shouldn't eat certain foods if you have diabetes.

Diabetes foods: Is honey a good substitute for sugar?
Generally, there's no advantage to substituting honey for sugar in a diabetes eating plan.

Diabetes insipidus
Diabetes insipidus — Comprehensive overview covers causes and treatment of this condition causing excessive urination.

Diabetes management: Does aspirin therapy prevent heart problems?
Aspirin therapy may not be needed if you have diabetes but not heart problems.

Diabetes management: How lifestyle, daily routine affect blood sugar
Diabetes management requires awareness. Know what makes your blood sugar level rise and fall.

Diabetes nutrition: Eating out when you have diabetes
Diabetes nutrition — Make restaurant meals a healthy part of your diabetes meal plan.

Diabetes nutrition: Including sweets in your meal plan
Diabetes nutrition focuses on healthy foods, but sweets aren't necessarily off-limits.

Diabetes prevention: 5 tips for taking control
Diabetes prevention is in your hands. Start by tweaking your lifestyle.

Diabetes symptoms: When to consult your doctor
Diabetes symptoms are often subtle. Pay attention to the clues your body's giving you.

Diabetes treatment: Can cinnamon lower blood sugar?
Most research suggests that cinnamon isn't an effective diabetes treatment.

Diabetes treatment: Medications for type 2 diabetes
Treatment for type 2 diabetes may include various medications to help control blood sugar.

Diabetes treatment: Using insulin to manage your blood sugar
Understanding how insulin affects your blood sugar can help you better manage your condition.

Diabetes: Are electric blankets off-limits?
Electric blankets are generally discouraged for people who have diabetes.

Diabetes: Does alcohol and tobacco use increase my risk?
Alcohol and tobacco use increase your risk of diabetes. Find out how.

Diabetes: How does it affect my liver?
Diabetes can increase your risk of some types of liver disease.

Diabetic coma
Diabetic coma — Comprehensive overview covers causes, treatment, prevention of this life-threatening diabetes complication.

Diabetic hyperosmolar syndrome
Diabetic hyperosmolar syndrome — Comprehensive overview covers symptoms, treatment, prevention of this life-threatening diabetes complication.

Diabetic hypoglycemia
Diabetic hypoglycemia — Comprehensive overview covers causes, symptoms and treatment of low blood sugar.

Diabetic ketoacidosis
Diabetic ketoacidosis — Comprehensive overview covers symptoms, treatment and prevention of this serious diabetes complication.

Diabetic neuropathy
Diabetic neuropathy — Comprehensive overview covers symptoms, causes, treatment of this serious complication of diabetes.

Diabetic retinopathy
Diabetic retinopathy — Comprehensive overview covers causes, diagnosis, treatment, prevention of this serious diabetes-related eye disease.

Diagnosing Alzheimer's: An interview with a Mayo Clinic specialist
Diagnosing Alzheimer's. A Mayo Clinic specialist explains the process and importance of early detection.

Diarrhea
Diarrhea — Comprehensive overview covers symptoms, causes, complications, treatment of this unpleasant digestive condition.

Diarrhea: Cancer-related causes and how to cope
Treatment for cancer-related diarrhea depends on what's causing your diarrhea.

Diet soda: Is it bad for you?
Diet soda isn't likely to hurt you, but healthier options abound.

Dietary fats: Know which types to choose
Not all fats are created equal. Find out which kinds to avoid and which to enjoy in moderation.

Dietary fiber: Essential for a healthy diet
A high-fiber diet offers many health benefits. Here's how to increase your fiber intake.

Dietary supplements: Nutrition in a pill?
Dietary supplements — What precautions to take when choosing and using vitamin and mineral supplements.

Dieting? Beware of liquid calories
Dieting — Calories in beverages can add up quickly, so stick with water.

Difficulty swallowing
Difficulty swallowing — Comprehensive overview covers causes, treatment of this potentially serious condition.

Diffuse idiopathic skeletal hyperostosis (DISH)
Diffuse idiopathic skeletal hyperostosis (DISH) — Comprehensive overview covers symptoms, treatment and complications.

Digestion: How long does it take?
Generally, digestion time varies between 24 and 72 hours.

Dilated cardiomyopathy
Dilated cardiomyopathy — Comprehensive overview covers symptoms, causes, diagnosis and treatment of this heart disorder.

Diphtheria
Diphtheria — Comprehensive overview covers symptoms of this infection that's preventable with a vaccine.

Disaster planning: Things you can do to stay healthy
Disaster planning — Take steps to stay healthy during a pandemic illness.

Discolored semen: What does it mean?
Changes in the appearance of semen are usually temporary. Learn about causes of discolored semen.

Disk replacement: An effective treatment for low back pain?
Disk replacement is a relatively new treatment option for degenerative disk disease.

Dislocated elbow
Dislocated elbow — Comprehensive overview covers symptoms, causes, treatments of this common elbow injury.

Dislocated shoulder
Dislocated shoulder — Comprehensive overview covers symptoms, causes and treatment of this shoulder injury.

Dislocation
Dislocation — Comprehensive overview covers causes, treatment of this injury to hip, knee, other joints.

Dislocation
What first-aid steps to take for dislocation of a joint.

Disorganized schizophrenia
Disorganized schizophrenia — Comprehensive overview covers symptoms, causes, treatment of this type of schizophrenia.

Dissociative disorders
Dissociative disorders — Comprehensive overview covers symptoms, causes and treatment of these mental health conditions.

Diuretics
Discover how diuretics — sometimes called water pills — treat high blood pressure and other conditions.

Diuretics: A cause of low potassium?
Diuretics — medications often used to treat high blood pressure — can cause low potassium.

Diverticulitis
Diverticulitis — Comprehensive overview covers symptoms, treatment, causes of this common colon disease.

Diverticulitis diet: Can certain foods trigger an attack?
Contrary to popular belief, no specific foods are known to trigger diverticulitis attacks.

Diverticulitis diet: Should I avoid nuts and seeds?
High-fiber diets — which may include seeds and nuts — actually help reduce the risk of diverticulitis.

Dizziness
Dizziness — Comprehensive overview covers types, symptoms, causes, treatments of this common health concern.

Do weight-loss products like Sensa work?
Weight-loss products such as Sensa claim to decrease appetite, but the proof is slim.

Doctor-patient communication: How to connect with your doctor online
The Internet can enhance doctor-patient communication. Here's how, from e-mail to virtual visits.

Does shaving make hair grow back thicker?
Shaving unwanted hair doesn't make it grow back thicker. This is a myth.

Does sunscreen expire?
Sunscreen loses strength over time. Find out when to throw it out.

Domestic violence against men: Know the signs, seek help
Domestic violence against men is real. Find out how to break the cycle.

Domestic violence against women: Recognize patterns, seek help
Domestic violence can happen to anyone. Understand how to break the cycle of abuse.

Doppler ultrasound: What is it used for?
A Doppler ultrasound measures blood flow and pressure in blood vessels.

Double uterus
Double uterus — Comprehensive overview covers symptoms, treatment of this uncommon congenital abnormality.

Down syndrome
Down syndrome — Comprehensive overview covers causes, risk factors and diagnosis of this genetic disorder.

Dressler's syndrome
Dressler's syndrome — Comprehensive overview covers symptoms, treatment of inflammation of the sac surrounding the heart.

Drug addiction
Drug addiction — Comprehensive overview covers signs, symptoms, causes, treatment of this chemical dependence.

Drug allergy
Drug allergy — Comprehensive overview covers symptoms and treatment of this adverse reaction to medications.

Drug-eluting stents: Do they increase heart attack risk?
Drug-eluting stents are generally safe if used with proper medications. Find out more.

Dry eyes
Dry eyes — Comprehensive overview covers symptoms, causes, treatment of decreased production of tears.

Dry macular degeneration
Macular degeneration — Comprehensive overview covers symptoms, risk factors, treatment of dry macular degeneration.

Dry mouth
Dry mouth — Comprehensive overview covers symptoms, causes, treatment of lack of saliva (xerostomia).

Dry skin
Dry skin — Comprehensive overview covers causes, treatments and tips for dry skin care.

Dry socket
Dry socket — Comprehensive overview covers symptoms, causes and treatments of this painful dental condition.

Ductal carcinoma in situ (DCIS)
Ductal carcinoma in situ (DCIS) — Comprehensive overview covers diagnosis, risk factors and treatment.

Dumping syndrome
Dumping syndrome — Comprehensive overview of rapid stomach emptying covers symptoms, causes, treatments, including diet.

Dupuytren's contracture
Dupuytren's contracture — Comprehensive overview covers symptoms, risk factors, treatment of this hand condition.

Dust mite allergy
Dust mite allergy — Comprehensive overview covers symptoms and treatment of allergy to dust mites.

Dwarfism
Dwarfism — Comprehensive overview covers symptoms, causes and treatment of very short stature.

Dysarthria
Dysarthria — Comprehensive overview covers causes, symptoms and treatment of this speech disorder.

Dyshidrosis
Dyshidrosis — Comprehensive overview covers symptoms, causes, treatment of this skin condition.

Dysthymia (dysthymic disorder)
Dysthymia — Comprehensive overview covers symptoms, causes and treatment of this type of depression.

Dystonia
Dystonia — Comprehensive overview covers symptoms, causes, treatment of this painful muscle-contraction disorder.

E. coli
E. coli — Comprehensive overview covers symptoms, complications, treatment of this common food-borne illness.

E. coli: How can I tell if food is contaminated?
E. coli doesn't affect the way a food looks, smells or tastes.

Ear candling: Is it safe?
Ear candling — A Mayo Clinic specialist explains the dangers of this earwax removal technique.

Ear stapling for weight loss: Does it work?
Generally, ear stapling for weight loss isn't an effective weight-loss strategy.

Early HIV symptoms: What are they?
Early HIV signs and symptoms may include fever, fatigue and swollen lymph glands. Learn more.

Early miscarriage: Is stress a factor?
Early miscarriage is usually caused by an abnormality with the baby — not maternal stress.

Early-onset Alzheimer's: When symptoms begin before 65
Early-onset Alzheimer's. Rare disorder linked to three genes. Tips for coping.

Earwax blockage
Earwax blockage — Comprehensive overview covers treatment, self-care for this common problem, including earwax removal.

Easy bruising: Common as you age
Easy bruising — Find out what causes bruises and when to see your doctor.

Eating and exercise: Time it right to maximize your workout
Timing what you eat before you exercise can make or break your workout.

Eating disorder treatment: Know your options
Eating disorder treatment — Options include medications, counseling and education. Find out what works.

Eating disorders
Eating disorders — Comprehensive overview covers symptoms, complications and treatment of these potentially life-threatening conditions.

Eating during cancer treatment: Tips to make food tastier
Cancer treatment may alter your sense of taste. Learn what you can do.

Ebola virus and Marburg virus
Ebola virus and Marburg virus — Comprehensive overview covers causes, symptoms of these deadly viruses.

Ebstein's anomaly
Ebstein's anomaly — Comprehensive overview covers symptoms, diagnosis, treatment of this rare heart defect.

Echinacea: Can it prevent common colds?
Echinacea likely won't prevent common colds, but the herbal supplement may reduce symptom severity.

Eclipse cigarettes: Safer than regular cigarettes?
Despite marketing claims about safety, Eclipse cigarettes aren't a safe alternative to traditional cigarettes.

Ectopic pregnancy
Ectopic pregnancy — Comprehensive overview covers symptoms and treatment of tubal pregnancy loss.

Ectropion
Ectropion — Comprehensive overview covers symptoms, causes, treatment of a sagging or outwardly turned eyelid.

Eczema bleach bath: Can it improve my symptoms?
Eczema bleach bath — A diluted bleach bath may help treat chronic eczema.

Edema
Edema — Comprehensive overview covers symptoms, causes, treatment and self-care of tissue swelling.

EGFR inhibitor cancer therapy: What are the side effects?
EGFR inhibitor therapies are effective for treating certain cancers, but they do have side effects.

Egg allergy
Egg allergy — Comprehensive overview covers symptoms, treatment of this condition.

Eggs: Are they good or bad for my cholesterol?
Get the straight facts about eggs and cholesterol.

Ehlers-Danlos syndrome
Ehlers-Danlos syndrome — Comprehensive overview covers symptoms, causes, treatment of this connective tissue disorder.

Ehrlichiosis
Ehrlichiosis — Comprehensive overview covers symptoms, treatment, prevention of this tick-borne disease.

Ejection fraction: What does it measure?
Ejection fraction is a measurement of the capacity at which your heart is pumping.

Electric toothbrush: Better than a regular toothbrush?
An electric toothbrush can be a great alternative to a manual toothbrush.

Electrical burns
How to administer first aid for an electrical burn.

Electrical shock
How to administer first aid for electrical shock.

Electroconvulsive therapy (ECT)
Electroconvulsive therapy video — Watch one woman's journey using electroconvulsive therapy to treat depression.

Electronic cigarettes — A safe way to light up?
Are electronic cigarettes safe? Makers say yes, but experts warn of health risks.

Elliptical machines: Better than treadmills?
Elliptical machines offer various advantages over treadmills.

Emergency contraception: Understand the options
Emergency contraception — Weigh the risks and benefits of different types of emergency birth control.

Emphysema
Emphysema — Comprehensive overview covers symptoms, causes, treatment and prevention of this serious lung disorder.

Emphysema: Does cold weather make it worse?
In some people with emphysema, breathing cold air can cause narrowing of the airways.

Encephalitis
Encephalitis — Comprehensive overview covers symptoms, causes, treatment of this potentially life-threatening condition.

End of life: Caring for your dying loved one
End of life — Take steps to make your dying loved one comfortable.

Endocarditis
Endocarditis — Comprehensive overview covers symptoms, treatment and prevention of this heart infection.

Endometrial cancer
Endometrial cancer — Comprehensive overview covers signs and symptoms, diagnosis, staging and treatment.

Endometriosis
Endometriosis — Comprehensive overview covers symptoms, causes, treatment of this common women's condition.

Endometriosis
In endometriosis, bits of tissue that lines the uterus implant on other pelvic organs.

Endometriosis: Risk factor for ovarian cancer?
Endometriosis and ovarian cancer are linked, but the relationship isn't straight cause and effect.

Endoscopic mucosal resection
Endoscopic mucosal resection is used to remove suspicious tissue from your digestive tract.

Endoscopy
Endoscopy allows your doctor to view your esophagus, stomach and part of your duodenum.

Energy density and weight loss: Feel full on fewer calories
Weight-loss tip — Eat foods that are high in volume and low in calories.

Energy drinks: Do they really boost energy?
Energy drinks may give you a temporary energy boost — but it doesn't last long.

Energy drinks: OK for athletes?
Energy drinks, which contain large amounts of caffeine, may pose various health risks.

Enlarged heart
Enlarged heart — Comprehensive overview covers symptoms, diagnosis and treatment for this heart muscle condition.

Enlarged liver
Enlarged liver — Comprehensive overview covers causes, treatment and risk factors.

Enlarged spleen (splenomegaly)
Enlarged spleen — Comprehensive overview covers symptoms, causes, and treatment of splenomegaly.

Enterocele
Enterocele — Comprehensive overview covers symptoms, causes, treatment of this type of vaginal hernia.

Entropion
Entropion — Comprehensive overview covers symptoms, causes, treatment of an eyelid that's turned inward.

Epidermoid cysts (sebaceous cysts)
Epidermoid cysts (sebaceous cysts) — Comprehensive overview covers causes, treatment of these noncancerous cysts.

Epidermolysis bullosa
Epidermolysis bullosa — Comprehensive overview covers symptoms, causes, treatments of this group of skin diseases.

Epididymitis
Epididymitis — Comprehensive overview covers symptoms, treatment of this inflamed testicle condition.

Epidural steroid injections for back pain: Why limited dosing?
Generally, you can receive only a limited number of epidural steroid injections a year.

Epiglottitis
Epiglottitis — Comprehensive overview covers symptoms, causes and treatment of swelling of the windpipe's "lid."

Epilepsy
Epilepsy — Comprehensive overview covers symptoms, causes, treatment of this common seizure disorder.

Epilepsy and pregnancy: What you need to know
Epilepsy and pregnancy — Get the facts on prenatal care, medication risks and more.

Epilepsy medication: Is it OK to switch brands?
Epilepsy medication — Switching from a name brand to generic drug could cause problems.

Episiotomy: When it's needed, when it's not
An episiotomy can speed delivery, but it isn't always necessary.

Erectile dysfunction
Erectile dysfunction — Comprehensive overview covers treatment, diagnosis of this common condition.

Erectile dysfunction and diabetes: Take control today
Erectile dysfunction and diabetes — prevention strategies, treatment options and more.

Erectile dysfunction herbs: A natural treatment for ED?
"Herbal Viagra" and other erectile dysfunction herbs: Should you try one?

Erectile dysfunction treatment: Can herbal remedies help?
Some herbal supplements may help in erectile dysfunction treatment, but more research is needed.

Erectile dysfunction: A sign of heart disease?
Erectile dysfunction and heart disease can be linked. Take steps to avoid both.

Erectile dysfunction: Viagra and other oral medications
Erectile dysfunction — Get the facts on Viagra, Levitra and Cialis.

Esophageal cancer
Esophageal cancer — Comprehensive overview covers symptoms, causes, treatment of cancer of the esophagus.

Esophageal spasms
Esophageal spasms — Comprehensive overview covers symptoms, treatment of abnormal muscle spasms in the esophagus.

Esophageal varices
Esophageal varices — Comprehensive overview covers symptoms, treatment of this life-threatening condition.

Esophagitis
Esophagitis — Comprehensive overview covers symptoms, causes, complications, treatments of inflammation of the esophagus.

Essential thrombocythemia
Essential thrombocythemia — Comprehensive overview covers symptoms, causes, treatment of this blood clotting disorder.

Essential tremor
Essential tremor — Comprehensive overview covers symptoms, causes, treatment of this movement disorder.

Exchange list: Fats
Diabetes diet — Here's a list of fats that equal one fat exchange.

Exchange list: Free foods
Diabetes diet — Find out how free foods fit into the exchange system.

Exchange list: Fruits
Diabetes diet — Here's a list of fruits that equal one food exchange.

Exchange list: Meat and meat substitutes
Diabetes diet — Here's a list of meats that equal one meat exchange.

Exchange list: Milk and yogurt
Diabetes diet — Here's a guide to milk and yogurt exchanges.

Exchange list: Nonstarchy vegetables
Diabetes diet — Here's a list of vegetables that equal one nonstarchy vegetable exchange.

Exchange list: Starches
Diabetes diet — Here's your guide to starches and what equals a food exchange.

Exchange list: Sweets, desserts and other carbohydrates
Diabetes diet — See how many carbohydrate exchanges are in some favorite sweets and desserts.

Exercise after pregnancy: How to get started
Exercise after pregnancy — Follow these strategies to keep it safe.

Exercise and cold weather: Stay motivated, fit and safe
Exercise and cold weather aren't mutually exclusive. Find out how to stay fit.

Exercise and illness: Should you exercise when you're sick?
Exercise and illness — Whether you should exercise when you're sick depends on your symptoms.

Exercise and stress: Get moving to combat stress
Exercise and stress — See how you can benefit from this mind-body connection.

Exercise during pregnancy: Is heart rate a concern?
Exercise during pregnancy — Caution is important, but specific heart rate limits don't necessarily apply.

Exercise for weight loss: Calories burned in 1 hour
Weight-loss exercise — See how many calories you burn in one hour of exercise.

Exercise headaches
Exercise headaches — Comprehensive overview covers causes, treatments of this puzzling disorder.

Exercise intensity: Why it matters, how it's measured
Exercise intensity is a measure of how hard you're exercising. Here's why it matters.

Exercise-induced asthma
Exercise-induced asthma — Comprehensive overview covers treatment, symptoms of this type of asthma.

Exercise: 7 benefits of regular physical activity
Need motivation to exercise? Consider seven ways exercise can improve your life — starting today!

Exercise: A drug-free approach to lowering high blood pressure
Exercise is a drug-free approach to lowering blood pressure. Here are tips on getting started.

Exercise: How much do I need every day?
The more you exercise, the greater the benefits. Consider the latest exercise guidelines.

Exercise: When to check with your doctor first
Regular exercise is important. But sometimes it's best to check with your doctor first.

Exercising with arthritis: Improve your joint pain and stiffness
Arthritis — Exercise helps reduce pain in people with arthritis, including osteoarthritis and rheumatoid arthritis.

Exercising with osteoporosis: Stay active the safe way
Osteoporosis weakens your bones, but you can still exercise — in fact, you should.

External compression headaches
External compression headaches — Comprehensive overview covers causes of this easily treated headache.

Eye dilation: Necessary with every eye exam?
Eye dilation is part of a comprehensive eye exam.

Eye exam: Do I need a laser retina scan?
A laser retina scan could complement your eye exam, but it's usually not necessary.

Eye floaters
Eye floaters — Comprehensive overview covers causes, symptoms, complications of this usually harmless vision-related phenomenon.

Eye melanoma
Eye melanoma — Comprehensive overview covers symptoms, diagnosis, treatment of this cancer of the eye.

Eye vitamins: Can they prevent or treat glaucoma?
Some supplement manufacturers are marketing "eye vitamins" that supposedly protect against glaucoma. Learn more.

Eyestrain
Eyestrain — Comprehensive overview covers treatment, prevention of this common eye condition.

Factor V Leiden
Factor V Leiden — Comprehensive overview covers causes and treatment of this inherited clotting disorder.

Fainting
First-aid instructions for fainting.

Fainting during urination (micturition syncope): What causes it?
Fainting during or immediately after urination (micturition syncope) is a rare occurrence in healthy individuals.

Fallopian tubes: Is pregnancy possible with only one?
Pregnancy may be possible with one fallopian tube.

Familial Mediterranean fever
Familial Mediterranean fever — Comprehensive overview covers symptoms, complications, treatment of this inherited inflammatory disorder.

Farsightedness
Farsightedness (hyperopia) — Comprehensive overview covers symptoms, causes, treatment of this correctable eye disorder.

Fast food: 5 ways to healthier meals
Fast food can fit into your healthy diet. These tips can help.

Fast weight loss: What's wrong with it?
Fast weight loss — Beware of trying to lose too much too soon.

Fat grams, calories or percentages: Which are more important?
Health experts recommend that 20 to 35 percent of your calories come from fat.

Fear of public speaking: How can I overcome it?
Fear of public speaking: A Mayo Clinic expert shares tips for overcoming this common problem.

Fecal incontinence
Fecal incontinence — Comprehensive overview covers symptoms, causes, treatment of this sometimes-difficult-to-discuss disorder.

Female fertility: Why lifestyle choices count
Female fertility — Understand what you can do to protect and promote your fertility.

Female infertility
Female infertility — Comprehensive overview covers causes, diagnosis and treatment of women's fertility problems.

Female orgasm: Why can't I climax during sexual intercourse?
Much has been written about the sometimes elusive female orgasm.

Female sexual dysfunction
Female sexual dysfunction — Comprehensive overview covers female sexual problems and possible treatments, including medications.

Fertility herbs: Do they enhance fertility?
There's no good evidence that so-called fertility herbs actually improve fertility.

Fetal alcohol syndrome
Fetal alcohol syndrome — Comprehensive overview covers symptoms, causes, prevention of these preventable birth defects.

Fetal development: The first trimester
Fetal development begins before you even know you're pregnant. Here's what happens early on.

Fetal development: The second trimester
Fetal development progresses rapidly in the second trimester. Check out the weekly changes.

Fetal development: The third trimester
Fetal development continues as your due date approaches. The countdown is on!

Fetal ultrasound
Fetal ultrasound provides a glimpse of your developing baby.

Fever
Fever — Comprehensive overview covers symptoms, causes, treatment of this common sign of illness.

Fever
What first-aid steps to take if you or someone else has a fever.

Fever treatment: Quick guide to treating a fever
Fever: Treat it or let it run its course? Here's help making the call.

Fiber supplements: Are they safe to take every day?
Fiber supplements help make stool soft, which can ease symptoms of constipation.

Fibroadenoma
Fibroadenoma — Comprehensive overview covers symptoms, diagnosis and treatment of this noncancerous breast tumor.

Fibrocystic breast changes: Linked to breast cancer?
Experiencing fibrocystic breast changes is a very common, noncancerous (benign) breast condition.

Fibrocystic breasts
Fibrocystic breasts — Comprehensive overview covers symptoms, causes, treatment and home remedies.

Fibromuscular dysplasia
Fibromuscular dysplasia — Comprehensive overview covers symptoms, causes and treatment of this rare artery-narrowing condition.

Fibromyalgia
Fibromyalgia — Comprehensive overview covers symptoms, treatment of this chronic condition characterized by widespread pain.

Fibromyalgia misconceptions: Interview with a Mayo Clinic expert
Fibromyalgia misconceptions — Don't let myths keep you from seeking treatment.

Fibromyalgia pain: Options for coping
Your fibromyalgia pain will eventually flare. Plan for a difficult day.

Fibromyalgia symptoms or not? Understand the fibromyalgia diagnosis process
Fibromyalgia symptoms? Work with your doctor to ensure a timely fibromyalgia diagnosis.

Fibromyalgia treatment: Does gabapentin relieve symptoms?
Fibromyalgia treatment — Gabapentin may be effective, but studies are limited.

Fibromyalgia: Can it cause elevated ESR and CRP levels?
In fibromyalgia, lab tests are typically normal — including ESR and CRP levels.

Fibrous dysplasia
Fibrous dysplasia — Comprehensive overview covers causes and treatments of this bone disorder.

First aid for bleeding
First-aid procedure to stop severe bleeding.

First trimester pregnancy: What to expect
First trimester pregnancy brings physical changes, anxiety and exhilaration.

First-aid kits: Stock supplies that can save lives
How to assemble first-aid kits for your home and car.

Fish oil supplements: Can they treat depression?
For some people, fish oil supplements may be an effective add-on therapy for depression.

Fitness ball bridge with heel dig
Comfortable with the fitness ball bridge? See how to add a heel dig.

Fitness ball exercises: Good for my abs?
Fitness ball exercises can add variety and challenge to your ab workouts.

Fitness for less: 4 low-cost ways to shape up
Gym memberships can be expensive. Consider cheaper options for getting in shape.

Fitness programs: 5 steps to getting started
Starting a fitness program is easier than you might think. Follow these five steps.

Fitness programs: 6 steps to guide your selection
Fitness programs — For the best results, choose a program based on your likes and dislikes.

Fitness programs: 7 tips for staying motivated
Fitness is for life. Motivate yourself with these practical tips.

Fitness tips for menopause: Why physical activity matters
Fitness tips for menopause — Follow these steps to promote a lifetime of good health.

Fitness training: 5 elements of a rounded routine
Fitness training — Is your program complete? Here's help covering the bases.

Fitting in fitness: Finding time for physical activity
Finding time for fitness can be tough. Start by making it convenient.

Flat stomach: Can wearing a girdle tighten abdominal muscles?
Want a flat stomach? Diet and exercise — not undergarments — are what count.

Flatfeet
Flatfeet — Comprehensive overview covers causes, treatment of this often symptomless foot condition.

Flaxseed: Does it affect risk of prostate cancer?
Does flaxseed increase or decrease prostate cancer risk? Researchers are still looking for the answer.

Flu germs: How long can they live outside the body?
Flu germs are more resilient than you may think. Learn how to protect yourself.

Flu mask: Should I wear one?
A flu mask won't protect you from H1N1 flu (swine flu) or seasonal flu. Here's why.

Flu shot: Will it prevent the stomach flu?
The flu shot protects against influenza, which is different from the stomach flu (gastroenteritis).

Flu shot: Your best bet for avoiding influenza
Flu shot — Get answers to your flu shot questions.

Flu shots: Important if you have heart disease
Flu shots are recommended for anyone with heart disease. Find out why.

Flu symptoms: H1N1 flu (swine flu)/seasonal flu, or common cold?
H1N1 flu (swine flu) and seasonal flu share symptoms. So is it the flu or a cold?

Flu vaccine: Safe for people with egg allergy?
If you have egg allergy, you still may be able to receive the flu vaccine.

Foamy urine: What does it mean?
Persistently foamy urine can be a sign of protein in your urine (proteinuria).

Folic acid supplements: Can they slow cognitive decline?
Several studies have looked at the benefit of folic acid supplements on cognitive decline.

Folliculitis
Folliculitis — Comprehensive overview covers causes, symptoms and treatments.

Food allergies: Watch food labels for these top 8 allergens
You can avoid allergic reactions by making sure to read food labels.

Food allergy
Food allergy — Comprehensive overview covers symptoms, testing and treatment of this troublesome food reaction.

Food allergy vs. food intolerance: What's the difference?
Food allergy or food intolerance? Different reactions can cause similar symptoms.

Food allergy: Can it develop later in life?
A food allergy can develop at any time in a person's life.

Food poisoning
Food poisoning — Comprehensive overview covers causes, symptoms and treatments.

Food poisoning: How long can you safely keep leftovers?
Prevent food poisoning with these food safety tips for handling and reheating leftover food.

Food pyramids: Explore these healthy diet options
Food pyramids offer a fun and easy way to create a healthy diet.

Food-borne illness
How to recognize and provide first aid for a food-borne illness.

Foods for healthy skin: Top picks
A healthy diet can promote healthy skin. Consider the best foods for healthy skin.

Foods that help you sleep: Does warm milk really work?
Foods that help you sleep — Find out if certain foods help you sleep better.

Foot drop
Foot drop — Comprehensive overview covers causes and treatment of difficulty lifting the foot.

Foot swelling during air travel: A concern?
Leg and foot swelling during air travel is common and usually harmless.

Forearm stretches for the office
Forearm stretches can help prevent stiffness. Try these stretches at work.

Foreign object in the ear
How to administer first aid for a foreign object in the ear.

Foreign object in the eye
How to administer first aid for a foreign object in the eye.

Foreign object in the nose
First-aid instructions for a foreign object in the nose.

Foreign object in the skin
How to administer first aid for foreign objects in the skin.

Foreign object inhaled
How to administer first aid for an inhaled foreign object.

Foreign object swallowed
How to administer first aid for a swallowed foreign object.

Forgiveness: Letting go of grudges and bitterness
Forgiveness and letting go can lead you down the path of healing and peace.

Fosamax and bisphosphonate-associated osteonecrosis: What's the risk?
Fosamax, other bisphosphonates may increase the risk of a rare but serious jaw disorder (osteonecrosis).

Fractures (broken bones)
How to administer first aid for a fracture (broken bone).

Freckles and moles: What's the difference?
Freckles and moles are areas of increased pigment in the skin.

Free blood pressure machines: Are they accurate?
Your results from a free blood pressure monitoring machine may not be accurate.

Freezing eggs: An option for future pregnancies?
Freezing eggs for future pregnancies is difficult — but possible.

Frequent sex: Does it protect against prostate cancer?
Some studies have suggested that frequent ejaculation may reduce the risk of prostate cancer.

Friendships: Enrich your life and improve your health
Friendships — Learn how to find good friends and be a good friend.

Frontal lobe seizures
Frontal lobe seizures — Comprehensive overview covers symptoms, diagnosis and treatment of this type of epilepsy.

Frontotemporal dementia
Frontotemporal dementia — Comprehensive overview covers symptoms, treatment for this group of rare brain disorders.

Frostbite
First-aid instructions for frostbite.

Frostbite
Frostbite — Comprehensive overview covers causes, symptoms and treatments of this cold injury.

Frozen shoulder
Frozen shoulder — Comprehensive overview covers symptoms, causes and treatment of this painful joint condition.

Fructose intolerance: Can it cause IBS?
Fructose intolerance isn't thought to cause IBS. However, fructose may aggravate IBS symptoms.

Fructose intolerance: Which foods should I avoid?
Learn which foods to avoid if you have fructose intolerance.

Fuchs' dystrophy
Fuchs' dystrophy — Overview covers symptoms, causes and treatment of this rare eye disorder.

Fundal height: An accurate indicator of fetal growth?
Fundal height — Understand how this pregnancy measurement is taken and what it means.

Galactorrhea
Galactorrhea — Comprehensive overview covers signs, causes and possible treatments.

Gallbladder cancer
Gallbladder cancer — Comprehensive overview covers symptoms, treatment of cancer of the gallbladder.

Gallbladder cleanse: A 'natural' remedy for gallstones?
A gallbladder cleanse is a popular alternative remedy for gallstones. But does it work?

Gallbladder polyps: Can they be cancerous?
The size of gallbladder polyps can be a useful predictor of whether they're cancerous.

Gallstones
Gallstones — Comprehensive overview covers symptoms, causes, treatment for this sometimes painful digestive disorder.

Ganglion cysts
Ganglion cysts — Comprehensive overview covers causes, treatment of lumps on wrist, hand or foot.

Gangrene
Gangrene — Comprehensive overview covers symptoms, diagnosis, treatment of tissue death.

Gas and gas pains
Gas and gas pains — Comprehensive overview covers causes, treatment, prevention of intestinal gas.

Gastric bypass surgery for weight loss
Watch this video to see how gastric bypass surgery is done.

Gastric bypass surgery: What happens if I regain the weight?
Gastric bypass surgery — You can't skip diet and exercise.

Gastric bypass surgery: Who is it for?
Gastric bypass surgery — Find out if this obesity treatment is right for you.

Gastritis
Gastritis — Comprehensive overview covers symptoms and treatment of both acute gastritis and chronic gastritis.

Gastroenteritis
How to recognize and provide first-aid help for gastroenteritis.

Gastroparesis
Gastroparesis — Comprehensive overview covers symptoms, treatment, diet for this digestive condition.

Gaucher's disease
Gaucher's disease — Comprehensive overview covers symptoms, causes, treatment of this metabolic disorder.

Gene expression profiling for breast cancer: What is it?
Gene expression profiling tests are designed to help plan adjuvant therapy for early-stage breast cancer.

Generalized anxiety disorder
Generalized anxiety disorder — Comprehensive overview covers symptoms, treatment and coping skills.

Genetic testing for breast cancer: Psychological and social impact
How the results of genetic testing may affect you and your family members.

Genital herpes
Genital herpes — Comprehensive overview covers symptoms, treatment of this highly contagious STD.

Genital herpes: Can you get it from a toilet seat?
It's unlikely you would get an STD like genital herpes from a toilet seat.

Genital warts
Genital warts — Comprehensive overview covers symptoms, treatment, prevention of this common sexually transmitted disease.

Geographic tongue
Geographic tongue — Comprehensive overview covers symptoms, treatments, home remedies for this benign oral condition.

GERD
GERD — Comprehensive overview covers symptoms, treatment, diet issues of this acid reflux disease.

GERD: Can certain medications increase severity?
Certain medications can aggravate symptoms of gastroesophageal reflux disease (GERD). Learn more.

Germs: Understand and protect against bacteria, viruses and infection
Germs. Learn how germs work and what you can do to protect yourself.

Gestational diabetes
Gestational diabetes — Comprehensive overview covers symptoms, treatment of diabetes that develops during pregnancy.

Get the most out of home blood pressure monitoring
Discover how to use home blood pressure monitoring to reach your target numbers.

Getting past a weight-loss plateau
Hit a weight-loss plateau? Don't despair. Restart your weight loss with these tips.

Giant cell arteritis
Giant cell arteritis — Comprehensive overview covers symptoms, causes, treatment of this blood vessel disorder.

Giardia infection (giardiasis)
Giardia infection — Comprehensive overview covers symptoms, treatment and diagnosis of this waterborne infection.

Gilbert's syndrome
Gilbert's syndrome — Comprehensive overview covers causes, complications, self-care of this inherited liver disorder.

Ginger for chemotherapy-induced nausea: Does it work?
Ginger is being studied for possible benefit in treating nausea caused by chemotherapy.

Gingivitis
Gingivitis — Comprehensive overview covers symptoms, causes, treatment and prevention of this gum disease.

Ginkgo biloba: Can it prevent memory loss?
Ginkgo biloba is thought to prevent memory loss, but study results suggest otherwise.

Ginkgo: Can I take it with ibuprofen?
Don't mix ginkgo with medications that can impair blood clotting — such as ibuprofen.

Glaucoma
Glaucoma — Comprehensive overview covers symptoms, causes, treatment of this eye condition that threatens vision.

Glomerulonephritis
Glomerulonephritis — Comprehensive overview covers symptoms, causes and treatments for acute and chronic glomerulonephritis.

Glucosamine supplements: Can they rebuild cartilage?
Many manufacturers claim that glucosamine supplements can repair cartilage damaged by arthritis.

Glucosamine: Can it worsen gout symptoms?
Taking glucosamine isn't likely to have any effect on gout — either good or bad.

Glucosamine: Does it affect blood sugar?
Does glucosamine affect blood sugar in people with type 2 diabetes?

Glycemic index diet: A helpful tool for diabetes?
Some people with diabetes use the glycemic index (GI) as a guide in selecting foods.

Goiter
Goiter — Comprehensive overview covers causes, treatment of this enlargement of the thyroid gland.

Goji juice: Can it lower my cancer risk?
Goji juice is touted as a cure-all, but evidence for the claims is weak.

Golf injuries: Why it pays to play it safe
Golf injuries are avoidable. Follow these tips to stay in shape on the course.

Golfer's elbow
Golfer's elbow — Comprehensive overview covers causes, treatment of this condition caused by repetitive motion.

Gonorrhea
Gonorrhea — Comprehensive overview covers symptoms, treatment, prevention of this sexually transmitted disease.

Gout
Gout — Comprehensive overview covers gout symptoms, causes and treatment, including gout diet.

Grand mal seizure
Grand mal seizure — Comprehensive overview covers symptoms, treatment of this seizure common in epilepsy.

Granuloma annulare
Granuloma annulare — Comprehensive overview covers symptoms, treatment of this chronic skin condition.

Granuloma: What does it mean?
A granuloma is a small area of inflammation due to tissue injury.

Grape juice: Same heart benefits as wine?
Grape juice may offer the same heart benefits as red wine.

Grapefruit juice: Can it cause drug interactions?
Grapefruit juice can interfere with certain prescription medications. Find out more.

Grass-fed beef: What are the heart-health benefits?
Grass-fed beef may have heart-health benefits that conventional beef doesn't. Find out more.

Graves' dermopathy: How is it treated?
Rarely, people with Graves' disease develop a skin condition called Graves' dermopathy (pre-tibial myxedema).

Graves' disease
Graves' disease — Comprehensive overview covers symptoms, causes treatment of this thyroid disorder.

Greenstick fractures
Greenstick fractures — Comprehensive overview covers symptoms, diagnosis and treatment of this childhood bone injury.

Grief: Coping with reminders after a loss
Grief — After someone close dies, reminders can reignite your grief. Learn to cope, heal.

Grieving process: Is crying required?
Crying can be an important part of the grieving process — but not always.

Grilled pineapple
Grilled pineapple — See how to prepare this healthy recipe.

Ground flaxseed: Better than whole?
Most nutrition experts recommend ground flaxseed over whole flaxseed. Find out why.

Group B strep
Group B strep — Comprehensive overview covers causes, risk factors, complications.

Growth plate fractures
Growth plate fractures — Comprehensive overview covers treatment, complications of this childhood bone injury.

Guillain-Barre syndrome
Guillain-Barre syndrome — Comprehensive overview covers symptoms, treatment of this potentially deadly muscle disorder.

Gynecomastia (enlarged breasts in men)
Gynecomastia (enlarged breasts in men) — Comprehensive overview covers symptoms, treatment of this common condition.

H. pylori infection
H. pylori infection — Comprehensive overview covers symptoms, treatment of infection with Helicobacter pylori bacteria.

H1N1 flu (swine flu)
H1N1 flu (swine flu) — Comprehensive overview covers symptoms, tests, treatment and prevention.

H1N1 flu (swine flu) and pregnancy: Are special precautions necessary?
H1N1 flu (swine flu) and pregnancy — H1N1 flu poses serious risks. Understand treatment options.

H1N1 flu (swine flu) pandemic: What does it mean?
The H1N1 flu (swine flu) pandemic means that the virus is globally widespread.

H1N1 flu (swine flu) symptoms: Is fever always present?
Fever is a key symptom of H1N1 flu (swine flu).

H1N1 flu (swine flu) symptoms: Self-care for the flu
H1N1 flu (swine flu) symptoms are much like symptoms of other types of flu.

H1N1 flu (swine flu) vaccine Q & A
H1N1 flu (swine flu) vaccine — Answers to your important questions.

H1N1 flu (swine flu): Can you catch it twice?
H1N1 flu (swine flu) can't reinfect you, but it's not the only flu in town.

H1N1 flu (swine flu): How serious is the global threat?
Here's what you need to know about the H1N1 flu (swine flu) global pandemic.

Hair dye and pregnancy: A concern?
Hair dye and pregnancy — Hair treatments during pregnancy aren't thought to pose harm.

Hair loss
Hair loss — Comprehensive overview covers causes, symptoms and treatments.

Hairy cell leukemia
Hairy cell leukemia — Comprehensive overview covers treatment, diagnosis, symptoms, complications of this rare blood cancer.

Hammertoe and mallet toe
Hammertoe and mallet toe — Comprehensive overview covers causes, treatments, prevention of these painful problems.

Hamstring curl with resistance tubing
The hamstring curl targets the back of the thigh. See how it's done.

Hamstring injury
Hamstring injury — Comprehensive overview covers symptoms, treatments, self-care, prevention of this leg muscle injury.

Hand swelling during exercise: A concern?
Hand swelling during exercise is fairly common. Unfortunately, the cause usually isn't clear.

Hand washing: Do's and don'ts
Hand washing — Done properly, hand washing is a simple way to avoid getting sick.

Hangover prevention: Does drinking lighter colored drinks help?
Light-colored alcoholic drinks may help with hangover prevention.

Hangovers
Hangovers — Comprehensive overview covers symptoms, treatment, prevention associated with drinking too much alcohol.

Hantavirus pulmonary syndrome
Hantavirus pulmonary syndrome — Comprehensive overview covers symptoms, treatment, prevention of this potentially fatal illness.

Hashimoto's disease
Hashimoto's disease — Comprehensive overview covers symptoms, treatment of this cause of thyroid gland inflammation.

Hay fever
Hay fever — Comprehensive overview covers treatment and prevention of this common allergic condition.

HCG diet: Is it safe and effective?
HCG diet — Can it help you lose weight?

HDL cholesterol: How to boost your 'good' cholesterol
A high HDL cholesterol level helps fight heart disease. Here's how to raise your HDL.

Head lice
Head lice — Comprehensive overview covers symptoms, causes, treatment, prevention of this itchy scalp condition.

Head pain
What to do if you or someone else has head pain.

Head trauma
How to administer first aid for head trauma.

Headaches and hormones: What's the connection?
Headaches are a fact of life for many women. Here's why.

Headaches during pregnancy: What's the best treatment?
Headaches during pregnancy are common. Here's help easing the pain.

Headaches: Reduce stress to prevent the pain
Headaches seem worse when you're under stress — and stress by itself can cause headaches.

Headaches: Treatment depends on your diagnosis and symptoms
To combat your headaches, you must first determine what type of headaches you have.

Health issues for gay men: Tips to stay healthy
Health issues for gay men — Understand the unique health risks and best prevention strategies.

Health issues for lesbians: Tips to stay healthy
Health issues for lesbians — Understand the unique health risks and how to prevent them.

Health news: Going beyond the headlines
Health news — How do you know what to believe? A Mayo Clinic expert shares tips.

Health savings accounts: Is an HSA right for you?
Health savings accounts (HSAs) help save money for medical expenses. Should you sign up?

Health screening guidelines
Get customized health screening guidelines, based on your age and sex.

Healthy breakfast: Quick, flexible options to grab at home
Healthy breakfast — Get several quick-and-healthy options to jump-start your day.

Healthy chocolate — Dream or reality?
Healthy chocolate? Yes! In moderation, chocolate — especially dark chocolate — may help prevent heart disease.

Healthy cooking techniques
Healthy cooking techniques capture the flavor and nutrients of food without extra fat or salt.

Healthy diet: End the guesswork with these nutrition guidelines
Healthy diet — nutritional recommendations designed to help promote health and prevent disease.

Healthy eating: 10 ways to add pizazz
Healthy eating — Keep on track with these 10 easy ways to freshen things up.

Healthy meals: Cooking for 1 or 2
Healthy meals for one or two are easy when you use these tips.

Healthy savings: The art of frugal food shopping
Use these frugal food tips to achieve healthy savings on your grocery bill.

Healthy sperm: Improving your fertility
Healthy sperm: What you can do that may increase your fertility.

Hearing aids: How to choose the right one
Hearing aids — Find out how to choose the right hearing aid.

Hearing loss
Hearing loss — Comprehensive overview covers symptoms, treatment, prevention of age- and noise-related hearing loss.

Heart and circulatory system — How they work
Watch this video to see how a healthy heart works.

Heart arrhythmias
Heart arrhythmias — Comprehensive overview covers symptoms, causes, treatment of this common heart disorder.

Heart attack
Heart attack — Comprehensive overview covers symptoms, causes, treatment of a heart attack.

Heart attack
How to recognize, get help for and provide first aid for a heart attack.

Heart attack prevention: Should I avoid secondhand smoke?
It's possible that secondhand smoke can irritate your arteries, increasing your heart attack risk.

Heart attack symptoms: Know what signals a medical emergency
Watch for these heart attack symptoms.

Heart cancer: Is there such a thing?
Although heart tumors do occur, the vast majority of them are noncancerous (benign).

Heart disease
Heart disease — Comprehensive overview covers symptoms, causes, treatments and prevention of heart disease.

Heart disease in women: Understand symptoms and risk factors
All women face the threat of heart disease. Discover how to protect your heart.

Heart disease risk calculator
Heart disease risk: Use this tool to calculate your risk of having a heart attack.

Heart failure
Heart failure — Comprehensive overview covers symptoms, causes, treatment of this common heart condition.

Heart murmurs
Heart murmurs — Comprehensive overview covers symptoms, causes, treatments of abnormal heart sounds.

Heart palpitations
Heart palpitations — Comprehensive overview covers the causes and treatments for rapid or skipped heartbeats.

Heart problems and pregnancy: Know the risks
Heart problems and pregnancy — Find out how to prepare for pregnancy, labor and delivery.

Heart rate: What's normal?
A normal heart rate ranges from 60 to 100 beats per minute.

Heart-healthy diet: 8 steps to prevent heart disease
Ready to start your heart-healthy diet? Here are eight tips to get you started.

Heartburn
Heartburn — Comprehensive overview covers treatment, symptoms, causes of this common digestive problem.

Heartburn and hiatal hernia
Watch this video to learn about heartburn and hiatal hernia.

Heartburn or chest pain: When is it heart attack?
Learn the potentially lifesaving difference between heartburn and heart attack.

Hearty turkey chili
Hearty turkey chili — See how to prepare this healthy recipe.

Heat cramps
How to recognize and provide first-aid treatment for heat cramps.

Heat exhaustion
How to recognize and provide first-aid treatment for heat exhaustion.

Heat exhaustion
Heat exhaustion — Comprehensive overview covers symptoms, causes and treatment of this heat-related illness.

Heat rash
Heat rash — Comprehensive overview covers symptoms, causes and treatment of this heat-related problem.

Heatstroke
How to recognize and provide first-aid treatment for heatstroke.

Heatstroke
Heatstroke — Comprehensive overview covers symptoms, treatment of this dangerous increase in body temperature.

Heavy periods: Can folic acid help?
Rather than treat heavy periods, folic acid supplements may help treat — or prevent — anemia.

Heel spurs: Do they always cause pain?
Heel spurs — bony growths not necessarily the cause of your heel pain.

Hemangioma
Hemangioma — Comprehensive overview covers signs, symptoms and possible treatments for this vascular birthmark.

Hemochromatosis
Hemochromatosis — Comprehensive overview covers symptoms, causes and treatment of this liver disorder.

Hemophilia
Hemophilia — Comprehensive overview covers symptoms, causes and treatment of this blood-clotting disorder.

Hemorrhoids
Hemorrhoids — Comprehensive overview covers symptoms, causes and treatment of this sometimes embarrassing, painful condition.

Hemorrhoids during pregnancy: What's the best treatment?
Hemorrhoids during pregnancy are common. Here's how to ease the discomfort.

Henoch-Schonlein purpura
Henoch-Schonlein purpura — Comprehensive overview covers symptoms, causes, treatment of this inflammatory disease.

Hepatitis A
Hepatitis A — Comprehensive overview covers symptoms, treatment and prevention, including hepatitis A vaccine.

Hepatitis B
Hepatitis B — Comprehensive overview covers symptoms, vaccine prevention of this sometimes chronic liver disease.

Hepatitis C
Hepatitis C — Comprehensive overview covers symptoms, treatment of infection with the hepatitis C virus.

Hepatitis C: How common is sexual transmission?
Although hepatitis C is highly contagious, the risk of sexual transmission is very low.

Hepatitis C: What happens in end-stage liver disease?
End-stage complications of hepatitis C include liver failure and liver cancer.

HER2-positive breast cancer: What is it?
HER2-positive breast cancer tends to be more aggressive than other types of breast cancer.

Herbal supplements: Can they interact with heart medications?
Some herbal supplements can have dangerous interactions with heart medications. Find out more.

Herbal supplements: What to know before you buy
Herbal supplements aren't right for everyone. Get the facts before you buy.

Herbal treatment for anxiety: Is it effective?
Herbal treatment may help with mild anxiety. A Mayo Clinic expert discusses what works and what's safe.

Hernia exam: Why do I have to cough?
During a hernia exam, you may be asked to turn your head and cough.

Herniated disk
Herniated disk — Comprehensive overview covers causes and treatment of back pain from disk herniation.

Herniated disk vs. bulging disk: What's the difference?
Bulging disks are more common than herniated disks and usually cause no pain.

Hiatal hernia
Hiatal hernia — Comprehensive overview covers symptoms, surgery and other treatments for this stomach hernia.

Hiccups
Hiccups — Comprehensive overview covers causes, treatment and self-care for hiccups.

Hidradenitis suppurativa
Hidradenitis suppurativa — Comprehensive overview covers causes, symptoms and treatments, which may include surgery.

High blood pressure (hypertension)
High blood pressure — Comprehensive overview covers symptoms, treatment and prevention of hypertension.

High blood pressure and cold remedies: Which are safe?
Among cold remedies, decongestants cause most concern for people who have high blood pressure.

High blood pressure and pregnancy: Healthy mom, healthy baby
High blood pressure and pregnancy — When you have hypertension, pregnancy requires special care.

High blood pressure and sex: Overcome the challenges
High blood pressure can impact your sex life. Consider potential problems — and solutions.

High blood pressure dangers: Hypertension's effects on your body
High blood pressure can cause other health complications. Find out how to control it.

High cholesterol
High cholesterol — Comprehensive overview covers diet, medication and other treatments to lower cholesterol.

High cholesterol treatment: Does cinnamon lower cholesterol?
Can cinnamon lower cholesterol? Most studies say no.

High-dose vitamin C: Can it kill cancer cells?
High-dose vitamin C has been touted by some as an effective alternative cancer treatment.

High-fiber foods
Eating enough high-fiber foods? Find out the dietary fiber content of some common foods.

High-frequency hearing loss: Can hearing aids help?
Today's hearing aids are effective for all types of hearing loss — including high-frequency hearing loss.

High-fructose corn syrup: What are the concerns?
High-fructose corn syrup has become a popular ingredient in many sodas and fruit-flavored drinks.

High-protein diets: Are they safe?
High-protein diets — Make sure they're safe for you.

Hip abduction walk with resistance tubing
The hip abduction walk targets the hip muscles. See how it's done.

Hip fracture
Hip fracture — Comprehensive overview covers symptoms, complications, treatment, prevention of a broken hip.

Hip labral tear
Hip labral tear — Comprehensive overview covers symptoms, treatments of tear in hip joint cartilage.

Hip resurfacing: An alternative to conventional hip replacement?
Learn about benefits and risks of hip resurfacing as a treatment for hip arthritis.

Hirschsprung's disease
Hirschsprung's disease — Comprehensive overview covers diagnosis, treatment of this serious problem with passing stool.

Hirsutism
Hirsutism — Comprehensive overview covers symptoms, complications, treatment of unwanted excess hair in women.

Histoplasmosis
Histoplasmosis — Comprehensive overview covers symptoms, treatment of this sometimes life-threatening fungal disease.

HIV/AIDS
HIV/AIDS — Comprehensive overview covers symptoms, treatment and prevention of this deadly infection.

Hives and angioedema
Hives and angioedema — Comprehensive overview covers symptoms, causes, treatment of these common allergic disorders.

Hoarding
Hoarding — Comprehensive overview covers symptoms, treatment for this compulsion to collect animals or things.

Hodgkin's lymphoma (Hodgkin's disease)
Hodgkin's lymphoma — Comprehensive overview covers symptoms, risk factors, treatment of this immune system cancer.

Hodgkin's vs. non-Hodgkin's lymphoma: What's the difference?
The difference between Hodgkin's and non-Hodgkin's lymphoma is the type of cell involved.

Holiday drinks: Good cheer, but watch the calories
Holiday drinks — Find out how many calories are in your holiday favorites.

Holiday recipes: Healthy-eating ideas for your holiday parties
Holiday recipes — Liven up your holidays with these healthy recipes for healthy eating.

Home pregnancy tests: Can you trust the results?
Could you be pregnant? Get the answers to common questions about home pregnancy tests.

Honey crusted chicken
Honey crusted chicken — See how to prepare this healthy recipe.

Honey: An effective cough remedy?
A study in children with the common cold suggests that honey may help calm coughs.

Hoodia: Does this dietary supplement help weight loss?
Hoodia — long on weight-loss hype, short on proof.

Hookah smoking: Is it safer than cigarettes?
Hookah smoking — See why it might be more harmful than cigarette smoking.

Hormone replacement therapy and your heart
Hormone replacement therapy has been linked to heart disease. What's the message for you?

Hormone replacement therapy: Can it cause vaginal bleeding?
Some forms of hormone replacement therapy may cause vaginal bleeding. Learn more.

Hormone therapy: Is it right for you?
Hormone therapy treats bothersome menopausal symptoms but isn't recommended to protect long-term health.

Horner syndrome
Horner syndrome — Comprehensive overview covers symptoms, causes diagnosis and treatment of this nerve disorder.

Hospice care: Comforting the terminally ill
Hospice care — Comfort and support for people who are terminally ill.

Hot flashes
Hot flashes — Comprehensive overview covers definition, causes and remedies for this common menopause symptom.

Hot-weather exercise: How to keep cool
Planning hot-weather exercise? Stay safe with caution and common sense.

How a stem cell transplant works
During stem cell transplant treatment for cancer, healthy stem cells migrate to your bone marrow.

How can I help a loved one with post-traumatic stress?
Use these tips to help a loved one with post-traumatic stress.

How cancer spreads
Watch this video to see how cancer spreads (metastasizes).

How CPAP controls sleep apnea
See how CPAP can keep you breathing easy if you have sleep apnea.

How diabetes affects your blood sugar
See how diabetes, blood sugar and insulin are related.

How fit are you? See how you measure up
Determine your fitness level with this four-part fitness assessment.

How irritable bowel syndrome affects you
Watch this irritable bowel syndrome video to learn how IBS can affect you.

How meat and poultry fit in your healthy diet
Cut the fat from your diet, not the meat and poultry.

How to choose a fitness ball
A fitness ball is versatile, but it's not one-size-fits-all. See your options.

How to choose resistance tubing
Resistance tubing is a lightweight, portable strength training tool. See how it's used.

How to cut your medical costs: Do's and don'ts
Save on medical costs, but not at the expense of your health.

How to get pregnant
Wondering how to get pregnant? Maximize your fertility — and know when to seek help.

How to help if your loved one has depression
Kristin Vickers Douglas, Ph.D., discusses how to help a loved one who may have depression.

How to measure blood pressure using a manual monitor
Watch this video to learn how to measure blood pressure using a manual monitor.

How to measure blood pressure using an automatic monitor
Watch this video to learn how to measure blood pressure using an automatic monitor.

How to start a walking group
Are you bored walking alone? Find motivation in numbers. Start a walking group today!

How to use a dry powder disk inhaler
Watch this video to learn how to use a dry powder disk inhaler.

How to use a dry powder tube inhaler
Watch this video to learn how to use a dry powder tube inhaler.

How to use a peak flow meter
Improve asthma control by using a peak flow meter, demonstrated in this video.

How to use a single-dose dry powder inhaler
Watch this video to learn how to use a single-dose dry powder inhaler.

How you feel pain
How you feel pain involves electrical and chemical messengers, as well as personal factors.

HPV infection
HPV infection — Comprehensive overview covers symptoms, modes of transmission, treatments; discussion of HPV vaccine.

HPV infection: A cause of cancer in men?
Learn about cancer risks associated with HPV in men.

HPV infection: How does it cause cervical cancer?
Cervical cancer is most often caused by a genital human papillomavirus (HPV) infection.

Human bites
How to administer first aid for human bites.

Human growth hormone (HGH): Does it slow aging?
Human growth hormone — an anti-aging breakthrough or an expensive scam? Know the facts.

Humidifiers: Moisture in the air eases skin, breathing symptoms
Humidifiers: What they can do for you and how to maintain them.

Hunter syndrome
Hunter syndrome — Comprehensive overview covers causes, treatment of this rare metabolic disorder.

Huntington's disease
Huntington's disease — Comprehensive overview covers symptoms, causes, treatment of this degenerative nervous system disorder.

Huperzine A: Can it treat Alzheimer's?
Huperzine A may play a role in Alzheimer's treatment, but more studies are needed.

Hurthle cell cancer
Hurthle cell cancer — Comprehensive overview covers symptoms, causes, treatment of this rare thyroid cancer.

Hydrocele
Hydrocele — Comprehensive overview covers causes and treatment of this generally harmless scrotal swelling.

Hydrocephalus
Hydrocephalus — Comprehensive overview covers symptoms, causes, treatment of this potentially fatal disorder.

Hyperbaric oxygen therapy: Can it reduce stroke damage?
Find out what the research says about hyperbaric oxygen therapy as a stroke treatment.

Hypercalcemia
Hypercalcemia — Comprehensive overview covers causes, symptoms, treatment of high calcium level in your blood.

Hyperextended knee: Cause of serious injury?
A hyperextended knee may tear or detach some of the ligaments in the knee.

Hyperglycemia in diabetes
Diabetic hyperglycemia — Comprehensive overview covers causes, symptoms and treatments of high blood sugar.

Hyperhidrosis (excessive sweating)
Hyperhidrosis — Comprehensive overview covers causes, symptoms and treatments for excessive sweating.

Hyperinflated lungs: What does it mean?
Hyperinflated lungs can be associated with a number of serious lung conditions.

Hyperinsulinemia: Is it diabetes?
Hyperinsulinemia is often associated with type 2 diabetes.

Hyperparathyroidism
Hyperparathyroidism — Comprehensive overview covers symptoms, causes, treatment of this disorder of the parathyroid glands.

Hypertensive crisis: What are the symptoms?
A hypertensive crisis is a severe increase in blood pressure that can lead to a stroke.

Hyperthyroidism (overactive thyroid)
Hyperthyroidism — Comprehensive overview covers symptoms, causes, treatment of an overactive thyroid gland.

Hypertrophic cardiomyopathy
Hypertrophic cardiomyopathy — Comprehensive overview covers symptoms, diagnosis and treatment of this heart disorder.

Hypochondria
Hypochondria — Comprehensive overview covers symptoms, treatment and coping with this severe health anxiety.

Hypoglycemia
Hypoglycemia — Comprehensive overview covers symptoms, causes, treatment of low blood sugar.

Hyponatremia
Hyponatremia — Comprehensive overview covers symptoms, causes and treatments of low blood sodium.

Hypoparathyroidism
Hypoparathyroidism — Comprehensive overview covers symptoms, causes, treatment of this hormonal disorder.

Hypopituitarism
Hypopituitarism — Comprehensive overview covers symptoms, causes, treatment of this rare hormonal disorder.

Hypoplastic left heart syndrome
Hypoplastic left heart syndrome — Comprehensive overview covers complications, treatment of this congenital heart condition.

Hypothermia
Hypothermia — Comprehensive overview covers symptoms, treatment, prevention of a life-threatening cold body temperature.

Hypothermia
How to administer first aid for hypothermia.

Hypothyroidism (underactive thyroid)
Hypothyroidism — Comprehensive overview covers symptoms, causes, treatment of an underactive thyroid gland.

Hypothyroidism and infertility: Any connection?
For women, there's sometimes a link between hypothyroidism and infertility.

Hypothyroidism diet: Can certain foods increase thyroid function?
There's no truth to the so-called "hypothyroidism diet."

Hypothyroidism symptoms: Can hypothyroidism cause eye problems?
Hypothyroidism symptoms can vary, but eye problems aren't usually a concern.

Hypothyroidism: Can calcium supplements interfere with treatment?
Calcium supplements can interfere with absorption of levothyroxine, an oral medication used to treat hypothyroidism.

Hypothyroidism: Can it cause peripheral neuropathy?
Rarely, hypothyroidism can cause peripheral neuropathy, such as carpal tunnel syndrome.

Hypothyroidism: Does it cause joint pain?
Hypothyroidism can cause muscle and joint problems, such as joint pain and stiffness.

Hypothyroidism: Should I take iodine supplements?
Although iodine deficiency can cause hypothyroidism, this deficiency is rare in the United States.

IBS in children: Is it possible?
IBS in children is possible, although the specific cause isn't clear.

Ice cream headaches
Ice cream headaches — Comprehensive overview covers causes of this common type of headache.

Ichthyosis vulgaris
Ichthyosis vulgaris — Comprehensive overview covers signs, symptoms, causes, diagnosis and treatment.

Idiopathic thromobocytopenic purpura (ITP)
Idiopathic thrombocytopenic purpura — Comprehensive overview covers symptoms, causes, treatment of this bleeding disorder.

IgA nephropathy (Berger's disease)
IgA nephropathy (Berger's disease) — Comprehensive overview covers symptoms, diagnosis, treatment of this kidney disorder.

Impacted wisdom teeth
Impacted wisdom teeth — Comprehensive overview covers symptoms, complications and treatment of impacted wisdom teeth.

Impetigo
Impetigo — Comprehensive overview covers causes, symptoms and treatments of this infectious skin condition.

Implantation bleeding
Implantation bleeding — A Mayo Clinic expert explains this common pregnancy symptom.

Indigestion
Indigestion — Comprehensive overview covers causes, symptoms, treatment for this common digestive disorder.

Inducing labor: When to wait, when to induce
Inducing labor — Find out who can benefit from inducing labor and why.

Infant death: Grief and the path to remembrance
Infant death — A Mayo Clinic psychologist answers challenging questions about coping with infant death.

Infectious diseases
Infectious disease — Comprehensive overview covers general causes, treatments and prevention of infectious diseases.

Infertility
Infertility — Comprehensive overview covers causes, treatment for both men and women with fertility problems.

Infidelity: Mending your marriage after an affair
Infidelity doesn't necessarily mean a marriage is over. Consider steps to promote healing.

Inflammatory breast cancer
Inflammatory breast cancer — Comprehensive overview includes signs and symptoms, screening, diagnosis and treatment.

Influenza (flu)
Influenza — Comprehensive overview covers symptoms, prevention, treatment and self-care of the flu.

Ingredient substitutions: Make the switch for healthier recipes
Create healthy recipes by swapping one ingredient for another. These substitution tips can help.

Ingrown hair
Ingrown hairs — Comprehensive overview covers causes, treatment, prevention of this painful skin condition.

Ingrown toenails
Ingrown toenails — Comprehensive overview covers symptoms, causes, treatment, prevention of this common condition.

Inguinal hernia
Inguinal hernia — Comprehensive overview covers symptoms and repair of this abdominal hernia.

Insect bites and stings
How to administer first aid for insect bites or stings.

Insomnia
Insomnia — Comprehensive overview covers causes, treatment, symptoms of this sleeping problem.

Insomnia treatment: Cognitive behavioral therapy instead of sleeping pills
Learn about an insomnia treatment that's an effective alternative to sleeping pills.

Insomnia: How do I stay asleep?
Frequent waking is a common form of insomnia. Here's how to fall asleep again.

Insulin and weight gain: Keep the pounds off
Insulin and weight gain often go hand in hand, but weight control is possible!

Insulin: Compare common options for insulin therapy
Insulin comes in many types. Consider how each type affects your blood sugar.

Intensive insulin therapy: Achieving tight blood sugar control
Intensive insulin therapy can help prevent long-term diabetes complications. Consider the benefits.

Intermittent explosive disorder
Intermittent explosive disorder — Comprehensive overview covers symptoms, causes, treatment of this violent problem.

Interstitial cystitis
Interstitial cystitis — Comprehensive overview covers symptoms, causes, treatment, self-care of this painful bladder inflammation.

Interstitial lung disease
Interstitial lung disease — Comprehensive overview covers symptoms, causes, treatments of these serious lung disorders.

Interval training: Can it boost your calorie-burning power?
Interval training — Use this simple technique to get the most out of your workouts.

Intervention: Help a loved one overcome addiction
Intervention — Join forces to break the cycle of destructive behavior.

Intestinal ischemia
Intestinal ischemia — Comprehensive overview covers symptoms, treatment of reduced blood supply to the digestive system.

Intestinal obstruction
Intestinal obstruction — Comprehensive overview covers causes, symptoms, diagnosis and treatment of this serious disorder.

Intracranial hematoma
Intracranial hematoma — Comprehensive overview covers symptoms, treatment of this serious complication of head trauma.

Intussusception
Intussusception — Comprehensive overview covers symptoms, diagnosis, treatment of this rare but serious intestinal disorder.

Invasive lobular carcinoma
Invasive lobular carcinoma — Comprehensive overview covers diagnosis, treatment of the lobular form of breast cancer.

Inversion therapy: Can it relieve back pain?
Inversion therapy is often promoted as a treatment for back pain.

Iritis
Iritis — Comprehensive overview covers symptoms, causes, treatment of this inflammation of the eye's iris.

Iron deficiency anemia
Iron deficiency anemia — Comprehensive overview covers symptoms, causes, treatment of this blood disorder.

Irritable bowel syndrome
Irritable bowel syndrome — Comprehensive overview covers symptoms, treatment of this chronic bowel disorder.

Is fibromyalgia hereditary?
Is fibromyalgia hereditary? Disorder appears to run in families.

Is sitting really bad for my health?
Sitting for extended periods appears to increase your risk of death from cardiovascular disease.

Ischemic colitis
Ischemic colitis — Comprehensive overview covers symptoms, causes, treatment of this disorder of the colon.

Isolated systolic hypertension: A health concern?
High systolic pressure (isolated systolic hypertension) is as important as high diastolic pressure.

Isometric exercises: Good for strength training?
Isometric exercises — A Mayo Clinic specialist explains the risks and benefits.

Itchy skin (pruritus)
Itchy skin (pruritus) — Comprehensive overview covers causes, treatments and self-care measures.

Jamaican barbecued pork tenderloin
Jamaican barbecued pork tenderloin — See how to prepare this healthy recipe.

Jellyfish stings
Jellyfish stings — Overview covers signs, symptoms and treatment of this common ocean nuisance.

Jet lag disorder
Jet lag disorder — Comprehensive overview covers symptoms, remedies, prevention of this travel-related sleep saboteur.

Job burnout: Understand symptoms and take action
Burnout can damage your health. Understand the signs, symptoms and what you can do.

Job satisfaction: Strategies to make work more gratifying
Job satisfaction — Explore causes of job dissatisfaction and ways to make work more rewarding.

Jock itch
Jock itch — Comprehensive overview covers symptoms and treatment of this fungal infection affecting more than just athletes.

Joint hypermobility: What causes 'loose joints'?
In most people, joint hypermobility causes no problems and requires no treatment.

Junk food blues: Are depression and diet related?
Depression and diet may be related, and junk food may increase risk of depression.

Kegel exercises: A how-to guide for women
Kegel exercises — Follow this how-to guide for strengthening your pelvic floor muscles.

Keratitis
Keratitis — Comprehensive overview covers causes, symptoms and treatment of this eye problem.

Keratoconus
Keratoconus — Comprehensive overview covers symptoms, causes and treatment of cone-shaped cornea.

Keratosis pilaris
Keratosis pilaris — Comprehensive overview covers causes, symptoms and treatments of this bumpy skin condition.

Kidney cancer
Kidney cancer — Comprehensive overview covers symptoms, treatment of kidney cancer, including renal cell carcinoma.

Kidney cysts
Kidney cysts — Overview covers symptoms, complications and treatment of simple kidney cysts.

Kidney dialysis: When is it time to stop?
Many factors may influence the decision to stop kidney dialysis.

Kidney donation: Are there long-term risks?
Kidney donation can save a life, but it's important to understand the risks.

Kidney infection
Kidney infection — Comprehensive overview covers symptoms, causes, treatment and prevention.

Kidney stones
Kidney stones — Comprehensive overview covers symptoms, risks, causes, treatment of this often intensely painful condition.

Kleptomania
Kleptomania — Comprehensive overview covers symptoms, diagnosis and treatment of compulsive stealing.

Klinefelter syndrome
Klinefelter syndrome — Comprehensive overview covers treatment, diagnosis of this genetic condition affecting males.

Knee bursitis
Knee bursitis — Comprehensive overview covers symptoms, causes, treatment, prevention and self-care.

Knee extension with weight machine
The knee extension exercise targets the front of the thigh. See how it's done.

Knee pain
Knee pain — Comprehensive overview covers symptoms, causes, treatment of this common joint condition.

Kombucha tea: What are the health benefits?
Long popular in other countries, Kombucha tea is gaining popularity in the United States.

Krabbe disease
Krabbe disease — Comprehensive overview covers symptoms, causes, treatment of this central nervous system disorder.

Kyphosis
Kyphosis — Comprehensive overview covers symptoms, causes, treatment of abnormal rounding of the upper spine.

L-arginine: Does it lower blood pressure?
L-arginine, a substance that relaxes blood vessels, is sometimes touted to reduce blood pressure.

Labor and delivery: Pain medications
Labor and delivery — Understand the pros and cons of various pain medications.

Labor pain: Weigh your options for relief
Labor pain — How you manage labor pain is up to you. Know your choices.

Lack of sleep: Can it make you sick?
Lack of sleep can affect your immune system. Here's what you need to know.

Lactose intolerance
Lactose intolerance — Comprehensive overview covers symptoms, causes, diet and self-care.

Laryngitis
Laryngitis — Comprehensive overview covers symptoms, causes and treatment for this common irritation.

Laryngospasm: What causes it?
Laryngospasm is a brief spasm of the vocal cords, which temporarily interrupts breathing.

LASIK eye surgery
Watch this video to see how LASIK eye surgery is done.

LASIK surgery: Is it right for you?
Find out whether you're a good candidate for vision correction through LASIK surgery.

Lat pull-down with weight machine
The lat pull-down targets the side of the chest wall. See how it's done.

Late-day exercise: Can it cause insomnia?
Several studies indicate that regular exercise improves sleep in people with insomnia.

Late-night eating: OK if you have diabetes?
Late-night snacks aren't necessarily off-limits with diabetes, but it's important to make wise choices.

Latex allergy
Latex allergy — Comprehensive overview covers symptoms and treatment of this dangerous but common allergy.

Latisse: The answer for longer, thicker eyelashes?
Latisse promotes longer, thicker, darker eyelashes, but causes side effects, too.

LDL cholesterol calculator
Use this target LDL cholesterol calculator to determine a healthy LDL cholesterol level.

Lead in lipstick: A health concern?
Is lead in lipstick a health risk?

Left ventricular hypertrophy
Left ventricular hypertrophy — Comprehensive overview covers symptoms, causes and treatment of this heart condition.

Leg pain after prolonged standing or sitting: A concern?
New, persistent leg pain or aching may indicate an underlying circulation problem.

Legionnaires' disease
Legionnaires' disease — Comprehensive overview covers causes, symptoms and treatment of this infectious disease.

Lentils: How do I cook with them?
Lentils are a protein-packed meat substitute available in most grocery stores.

Leukemia
Leukemia — Comprehensive overview covers symptoms, causes, risk factors, treatment of this blood-related cancer.

Leukoplakia
Leukoplakia — Comprehensive overview covers symptoms and treatment of this irritation of the mouth.

Lewy body dementia
Lewy body dementia — Comprehensive overview covers symptoms, complications, treatment of this progressive brain disorder.

Lexapro side effects: Is breast tenderness common?
For some women, Lexapro side effects seem to include breast tenderness.

Lice
Lice — Comprehensive overview covers treatment, prevention of infection with these tiny, wingless, parasitic insects.

Lichen nitidus
Lichen nitidus — Comprehensive overview covers symptoms, treatment of this harmless skin condition.

Lichen planus
Lichen planus — Comprehensive overview covers causes, symptoms and treatments of this itchy rash.

Lichen sclerosus
Lichen sclerosus — Comprehensive overview covers symptoms, causes, complications, treatment of this blotchy skin condition.

Limited scleroderma (CREST syndrome)
Limited scleroderma (CREST syndrome) — Comprehensive overview covers symptoms, causes, treatment of this autoimmune disorder.

Lipitor and Zocor: Are they equally effective?
Lipitor and Zocor belong to a group of cholesterol-lowering drugs called statins.

Lipoma
Lipoma — Comprehensive overview covers symptoms, causes, treatment of this usually harmless fatty tumor.

Lipovarin: An effective weight-loss supplement?
Lipovarin is claimed to promote weight loss but may actually pose serious health risks.

Listeria infection
Listeria infection — Comprehensive overview covers symptoms, treatment, prevention of this food-borne illness.

Livedo reticularis: What causes it?
Livedo reticularis is a vascular condition characterized by purplish mottling of the skin.

Liver cancer
Liver cancer — Comprehensive overview covers symptoms and treatment of this cancer, including hepatocellular carcinoma.

Liver cysts: A cause of abdominal pain?
Occasionally, liver cysts can cause pain and discomfort in the upper abdomen.

Liver hemangioma
Liver hemangioma — Comprehensive overview covers definition, symptoms, treatment of this noncancerous liver mass.

Liver problems
Liver problems — Comprehensive overview covers symptoms, causes, prevention of liver diseases and conditions.

Living wills and advance directives for medical decisions
Living wills, a part of advance directives, describe your treatment preferences in end-of-life situations.

Lobular carcinoma in situ (LCIS)
Lobular carcinoma in situ (LCIS) — Comprehensive overview covers symptoms and treatments.

Long QT syndrome
Long QT syndrome — Comprehensive overview covers causes and treatment of this racing heart condition.

Loss of sex drive in men: Natural with aging?
An abrupt loss of sex drive may indicate an underlying condition.

Low amniotic fluid: Should I worry?
Low amniotic fluid may be cause for concern. Find out why.

Low blood cell counts: Side effect of cancer treatment
Low blood cell counts increase your risk of severe complications during your cancer treatment.

Low blood pressure (hypotension)
Low blood pressure (hypotension) — Comprehensive overview covers symptoms, causes and treatment of this condition.

Low sex drive in women
Low sex drive in women — Comprehensive overview covers diagnosis, treatment of this common problem.

Low sperm count
Low sperm count — Comprehensive overview covers causes, treatment of this condition.

Low-carb diet
Low-carb diet — Understand the low-carb diet, from a typical menu to expected results.

Low-grade astrocytoma: When is surgery recommended?
Treatment options for low-grade astrocytoma depend on several factors.

Low-phosphorus diet: Best for kidney disease?
If you have kidney disease, your doctor may recommend a low-phosphorus diet.

Low-sodium diet: Why is processed food so salty?
Salt helps prevent spoiling by drawing moisture out of food, so bacteria can't grow.

Lower back tattoo: OK to have an epidural?
A lower back tattoo may influence the decision to have an epidural during labor.

Lung cancer
Lung cancer — Comprehensive overview covers symptoms, causes, treatment of non-small and small cell types.

Lung CT scan for cancer: Should you be screened?
Lung CT scans — Researchers are studying whether CT helps with lung cancer screening.

Lung nodules: Can they be cancerous?
Most lung nodules are noncancerous, but some may represent early-stage lung cancer.

Lunge exercise
The lunge is an exercise that targets the leg muscles. See how it's done.

Lupus
Lupus — Comprehensive overview covers symptoms and treatment of lupus, including systemic lupus erythematosus.

Lupus: Can it cause hair loss?
Hair loss is common in lupus. Although distressing, it is usually temporary.

Lupus: Can it cause hives?
Although uncommon, hives can occur in people with lupus. Learn about causes and treatments.

Lupus: How does it affect the kidneys?
Lupus can cause inflammation of the kidneys, which can impair their function.

Lying hamstring curl with weight machine
The hamstring curl exercise targets the back of the thigh. See how it's done.

Lyme disease
Lyme disease — Comprehensive overview covers symptoms, treatment, complications of this tick-borne illness.

Lymphedema
Lymphedema — Comprehensive overview covers symptoms, causes, treatment of this condition associated with limb swelling.

Lynch syndrome
Lynch syndrome — Comprehensive overview covers genetic condition that greatly increases risk of colon cancer.

Macrocytosis: What causes it?
Enlarged red blood cells (macrocytosis) can be due to many factors.

Magic mouthwash: Effective in treating chemotherapy mouth sores?
Magic mouthwash used while receiving chemotherapy may ease painful mouth sores.

Main attraction: 10 vegetable main dishes
Here are 10 ways to transform fresh vegetables into main-meal options.

Making healthy turkey and turkey gravy
Thanksgiving turkey and healthy gravy — Watch this video to see how it's done.

Malaria
Malaria — Comprehensive overview covers symptoms, causes, treatment, prevention of this infectious disease.

Male breast cancer
Male breast cancer — Comprehensive overview covers symptoms, causes, treatment of breast cancer in men.

Male depression: Understanding the issues
Male depression — Understand symptoms, consequences and coping skills.

Male hypogonadism
Male hypogonadism — Comprehensive overview covers symptoms and treatment of testosterone deficiency.

Male infertility
Male infertility — Comprehensive overview covers causes, treatments of this condition.

Male masturbation: Does frequency affect male fertility?
The frequency of male masturbation doesn't affect the ability to produce sperm.

Male menopause: Myth or reality?
Male menopause is a catchy phrase, but it isn't necessarily accurate. Here's why.

Male yeast infection: Can I get it from my girlfriend?
Learn about causes and signs and symptoms of male yeast infection.

Mammary duct ectasia
Mammary duct ectasia — Comprehensive overview covers symptoms, causes of this noncancerous breast condition.

Mammogram for breast cancer — What to expect
Watch video to see what it's like to have a mammogram, breast cancer detection exam.

Mammogram guidelines: What's changed?
Latest mammogram guidelines for breast cancer screening.

Mammogram: Can it find cancer in dense breasts?
Dense breasts can make a mammogram more difficult to interpret.

Mangosteen juice: Can it relieve arthritis pain?
Some marketers claim mangosteen juice has anti-inflammatory benefits. Find out what the research says.

MAOIs and diet: Is it necessary to restrict tyramine?
A low-tyramine diet is important for anyone who's taking MAOIs.

Marfan syndrome
Marfan syndrome — Comprehensive overview covers symptoms, treatment of this connective tissue disorder.

Marijuana and depression: What's the link?
Marijuana and depression seem to go hand in hand for some people.

Massage: Get in touch with its many health benefits
Massage — Explore the health benefits, potential risks and what to expect from massage therapy.

Mastitis
Mastitis — Comprehensive overview covers symptoms, self-care and treatment for this common breast-feeding complication.

Maternity leave: Tips for returning to work
Maternity leave about to end? Here's help making a successful transition back to work.

Mayo Clinic expert answers your questions on H1N1 flu (swine flu)
H1N1 flu (swine flu) questions and answers.

Mayo Clinic Healthy Weight Pyramid tool
Here's your personalized meal plan for weight loss and weight maintenance.

Mayo Clinic Healthy Weight Pyramid: A sample menu
Mayo Clinic Healthy Weight Pyramid — Use this menu to plan daily meals and snacks.

Measles
Measles — Comprehensive overview covers symptoms, treatment of this vaccine-preventable disease.

Meatless meals: The benefits of eating less meat
Meatless meals are an easy way to eat healthy and save money.

Medical history: Compiling your medical family tree
Medical history — Use a special family tree to track your family's health information.

Medication errors: Cut your risk with these tips
Medication errors: Reduce your risk with some simple safety tips.

Medications and supplements that can raise your blood pressure
Could your medications or supplements be affecting your blood pressure? Find out.

Meditation: Take a stress-reduction break wherever you are
Meditation — Learn quick and easy ways to meditate, no matter where you are.

Mediterranean diet: Choose this heart-healthy diet option
The heart-healthy Mediterranean diet emphasizes healthy fats, fruits and vegetables.

Mediterranean-style grilled salmon
Mediterranean style grilled salmon — See how to prepare this healthy recipe.

Melanoma
Melanoma — Comprehensive overview covers symptoms, treatment of this most serious type of skin cancer.

Melanoma ­— Early stage and advanced melanoma
Melanoma — Video explains early-stage melanoma and advanced melanoma.

Melatonin side effects: What are the risks?
Melatonin may help you fall asleep, but unanswered questions about melatonin side effects remain.

Memory loss: 7 tips to improve your memory
Memory loss can be concerning. Take control by staying active and engaged.

Memory loss: When to seek help
Memory loss in Alzheimer's follows a pattern distinct from that of normal memory loss.

Men's health: Preventing your top 10 threats
Men's health — Understand the leading causes of death and how to reduce your risk.

Meniere's disease
Meniere's disease — Comprehensive overview covers symptoms and treatment of this balance and hearing disorder.

Meningioma
Meningioma — Comprehensive overview covers symptoms and treatment of this usually benign brain tumor.

Meningitis
Meningitis — Comprehensive overview covers symptoms, treatment, prevention of this brain and spinal cord inflammation.

Menopause
Menopause — Comprehensive overview covers symptoms, treatment options and self-care measures.

Menopause and high blood pressure: What's the connection?
For many women, menopause and high blood pressure seem to go hand in hand.

Menorrhagia (heavy menstrual bleeding)
Menorrhagia — Comprehensive overview covers signs and symptoms, causes, diagnosis and treatment.

Menstrual cramps
Menstrual cramps — Comprehensive overview covers causes, treatment and self-care tips for getting relief.

Menstrual cup: Good alternative to tampons?
A menstrual cup is worn inside the vagina to collect menstrual fluid.

Mental health providers: Find one to suit your needs
Mental health providers: Find the best one for you

Mental health: Overcoming the stigma of mental illness
Mental health — Understand and overcome the stigma of mental illness and mental health disorders.

Mental health: What's normal, what's not
Mental health vs. mental illness — Find out how mental illnesses are diagnosed and defined.

Mental illness
Mental illness — Comprehensive overview covers symptoms, causes and treatment for mental illness.

Menu planning: Eat healthier and spend less
Menu planning supports healthy eating — and saves time and money.

Menus for heart-healthy eating: Cut the fat and salt
Use these menus to jump-start your heart-healthy diet.

Meralgia paresthetica
Meralgia paresthetica — Comprehensive overview covers symptoms, causes and treatments of this compressed nerve condition.

Merkel cell carcinoma
Merkel cell carcinoma — Comprehensive overview covers symptoms, complications, treatment of this aggressive skin cancer.

Mesothelioma
Mesothelioma — Comprehensive overview covers malignant mesothelioma, including peritoneal and pleural types of this cancer.

Metabolic syndrome
Metabolic syndrome — Comprehensive overview covers symptoms, treatment of conditions related to insulin resistance.

Metabolism and weight loss: How you burn calories
Metabolism — Find out how it influences weight loss and ways to burn more calories.

Metabolism: What's the best way to boost it?
Metabolism — Focus on the basics instead of metabolism for weight loss.

Metatarsalgia
Metatarsalgia — Comprehensive overview covers symptoms, treatment and prevention of this foot injury.

Microwaving plastic: Does it release dioxins?
Heating microwave-safe plastic containers isn't thought to release dioxins.

Migraine
Migraine — Comprehensive overview covers symptoms, causes, treatment of this debilitating variety of headache.

Migraine aura
A migraine aura is usually visual, but can also be a sensory, motor or verbal disturbance. This animation shows what happens when you have a migraine aura.

Migraine medications and antidepressants: A risky mix?
Combining migraine medications and antidepressants may pose several concerns.

Migraine self-assessment
Take this self-assessment and determine which treatment options might help you cope with your migraines.

Migraine treatment: Can antidepressants help?
Certain antidepressants are used in migraine treatment. Learn more about these medications.

Migraine with aura
Migraine with aura — Comprehensive overview covers symptoms, causes, treatment of this type of headache.

Migraines and gastrointestinal problems: Is there a link?
Migraines can be associated with certain gastrointestinal problems. Learn more.

Migraines: Are they triggered by weather changes?
Can weather changes trigger migraines? Learn more.

Migraines: Simple steps to head off the pain
Migraines may be less frequent and less severe with these self-care strategies.

Mild cognitive impairment
Mild cognitive impairment (MCI) — Comprehensive overview covers symptoms, possible treatments and more.

Mild depression: Are antidepressants effective?
Antidepressants don't always ease mild depression symptoms — but you may still benefit from treatment.

Milk allergy
Milk allergy — Comprehensive overview covers symptoms, treatment of this condition.

Milnacipran (Savella) for fibromyalgia: What makes it different?
Milnacipran (Savella) is a unique fibromyalgia medication that reduces pain perception in your brain.

Mini-stroke vs. regular stroke: What's the difference?
The term "mini-stroke" is a misnomer that typically refers to a transient ischemic attack.

Miscarriage
Miscarriage — Comprehensive overview covers causes, risk factors and how to cope.

Mitral valve prolapse
Mitral valve prolapse — Comprehensive overview covers symptoms, causes and treatment of this heart disorder.

Mitral valve prolapse: Can it thicken the aorta?
Mitral valve prolapse is often harmless. For most people, treatment isn't necessary.

Mitral valve regurgitation
Mitral valve regurgitation — Comprehensive overview covers symptoms, causes, treatment of this heart disorder.

Mitral valve regurgitation
Mitral valve regurgitation is shown in this video.

Mitral valve repair surgery
Watch this video to see how doctors do mitral valve repair surgery.

Mitral valve stenosis
Mitral valve stenosis — Comprehensive overview covers symptoms, causes, treatment of this heart valve disease.

Mittelschmerz
Mittelschmerz — Comprehensive overview covers symptoms, causes, treatment of abdominal pain during ovulation.

Mixed connective tissue disease
Mixed connective tissue disease — Comprehensive overview covers symptoms, treatments for this rare autoimmune disorder.

Modified push-up
The modified push-up is less challenging than a classic push-up. See how it's done.

Moisturizers: Options for softer skin
Moisturizers — Here's what you need to know about selecting and using moisturizers.