Contrary to what the fads might tell us, diets are not only for weight loss and maintenance. Primarily, diets are for good health and for disease prevention. The ultimate goal of any diet, and eating as a whole, is to reach a certain level of personal health and complete nutrition.

Patients of certain diseases must have a special diet that will help them maintain a desirable body weight and disposition, at the same time minimize if not improve, the complications associated with their disease. Some disease however, cannot be cured by just medicines, and the best prescription to this, as thousands of researches have shown, is a simple, healthy lifestyle through dietetic changes.