> By 2 years, weight loss remained similar in those who were assigned to a
  > diet with 15% protein and those assigned to a diet with 25% protein (3.0
  > and 3.6 kg, respectively); in those assigned to a diet with 20% fat and
  > those assigned to a diet with 40% fat (3.3 kg for both groups); and in
  > those assigned to a diet with 65% carbohydrates and those assigned to a
  > diet with 35% carbohydrates (2.9 and 3.4 kg, respectively) (P>0.20 for all
  > comparisons)

  [...]

  > The principal finding is that the diets were equally successful in promoting
  > clinically meaningful weight loss and the maintenance of weight loss over the
  > course of 2 years. Satiety, hunger, satisfaction with the diet, and attendance
  > at group sessions were similar for all diets.