Origins
The origins of the three-day diet are unclear. Some people believe that they go back to the 1980s when these kinds of diets were faxed from person to person. Three-day diets go by many different names, including the fax diet, Army diet, Navy diet, Cleveland Clinic diet, and many others. Often they are just referred to as three-day diets. Although many versions of this diet are named after medical institutions, no medical institutions claim responsibility for or recommend these diets. Institutions such as the British Heart Foundation and the Cleveland Clinic have issued statements that they do not support the three-day diet.