Some fad diets may even recommend that followers do exercise or consult their health care provider as a part of the program, which may add to the diet's claim of legitimacy. The major difference between a medically sound, safe weight loss plan and a fad diet is that a fad diet does not involve adequate amounts of food in appropriate portions as recommended in the USDA Food Guide Pyramid. In addition, fad diets promise significant weight loss in a quick period of time, often without physical exercise or a commitment to healthier habits and lifestyle changes. A limited number of food groups, including just fruits and baked potatoes for the first three days. The diet promises to take off up to 15 pounds in 35 days.
Claims regarding the separation of foods from different food groups is scientifically unfounded.
If used long-term, may result in vitamin and nutrient deficiencies. Calories do not regulate weight gain or loss. Promises that you can eat most foods in normal quantities or even larger quantities than you presently consume. No scientific evidence supporting the claim that the avoidance of high-glycemic foods will promote weight loss. The lowered consumption of carbohydrates that the diet recommends may be offset by the dieter's consumption of larger amounts of protein and fat.