Fast weight loss: What's wrong with it? The concern with fast weight loss is that it usually takes extraordinary efforts in diet and exercise — efforts that often aren't sustainable over the long term. Successful weight loss requires making permanent changes in your eating and exercise habits.
A slow and steady approach is easier to maintain and usually beats out fast weight loss for the long term. A weight loss of 1 to 2 pounds a week is the typical recommendation. Although it may seem...