Researchers test four theories for weight - loss effectiveness . Dieting theories emphasize carbohydrates , proteins or fat . No huge differences exist between diets , nor is calorie reduction . From these results , Sacks recommends going with `` the diet you feel most comfortable that is healthy , that appeals to you in terms of what foods are in it , that is n't a drastic crash diet . Follow your weight - loss success story with iReport .
Researchers test four theories for weight - loss effectiveness . Dieting theories emphasize carbohydrates , proteins or fat . No huge differences exist between diets , nor is calorie reduction . Follow your weight - loss success story with iReport .