The purpose of these diets is to promote fat loss, not muscle loss. The high protein content helps prevent large losses of muscle tissue. Electrolytes, vitamins, and minerals are also supplemented. Proper use of these diets requires close medical monitoring and follow-up. To promote lasting weight loss, lifestyle changes must be made by the dieter while on the fast.
Ads claim quick and easy weight loss with the use of such products.
Very obese patients may be referred to these types of diets if the diets are carefully supervised by a healthcare provider. Such programs may be right for obese persons who have serious weight-related medical problems. Rapid weight loss is the primary advantage of using these diets and this may be helpful in motivating the individual to continue with the program. This may help to support lifestyle changes that are needed for continued weight loss. However, while these diets may promote large amounts of weight loss, they are also associated with health risks.