Most fad diets fail because:

A. They do not help the dieter change bad eating habits

B. They can be sued by people with eating disorders

C. they can do more harm than good

D. They do not work

1 answer

A. They do not help the dieter change bad eating habits

While all the options may have some validity, the primary reason most fad diets fail is that they do not promote sustainable changes in eating habits. Fad diets often focus on short-term weight loss rather than long-term lifestyle changes, which can lead to regaining lost weight once the diet ends.