Several studies suggest that if the aim is getting healthier rather than slimmer, then in the long run the “Health at Every Size” approach works better than dieting. In 2005, Bacon led the only randomized control trial to date that tested this hypothesis physiologically. She randomly assigned half of the 78 subjects, all women, to a “Health at Every Size” group; while they lost no weight, their healthier behavior led to lower blood-pressure and cholesterol levels, which stayed low even two years later. In the weight-loss group, more than 40 percent dropped out before the six-month low-calorie diet ended, and at the two-year follow-up, the average dieter had regained all her lost weight, and the only measurement that dropped was one for self-esteem.
Go read the rest and consider who would actually be losing out if we all stopped trying to force our bodies into the literally narrowest of ideals.