... most of them would have been better off not going on the diet at all. Their weight would be pretty much the same, and their bodies would not suffer the wear and tear from losing weight and gaining it all back."
(In many cases, the weight gained back by the dieters was more than they originally lost.)
So if dieting doesn't work, what does the group recommend for weight loss? Eating in moderation and exercising.
But you guys knew that already.