I consider most of these studies bunk because they all are looking for something other than personal discipline (or self control) to blame for failed weight loss. No one today wants to blame the individual for the situation they are in these days.

Bottom line - If you control what goes in your mouth you control your weight, or weight loss. If you also exercise regularly, you will lose weight and gain muscle.

I am not saying it isn't hard, but there is no secret to weight loss (which ever route you choose to take).

( I remember many years back there was a documentary on weight loss, and it combined interviews with obese people telling the interviewer that they ate like birds and still gained weight, and then they filmed them at home and showed how much they truly ate during the average day.)