Dieting is worse than useless

We often hear that most people who diet eventually gain the weight back, (and then some). In fact, a new study from UCLA concludes that most people would be better off not dieting 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.”

People on diets typically lose 5 to 10 percent of their starting weight in the first six months, the researchers found. However, at least one-third to two-thirds of people on diets regain more weight than they lost within four or five years, and the true number may well be significantly higher, they said.

“Several studies indicate that dieting is actually a consistent predictor of future weight gain,” said Janet Tomiyama, a UCLA graduate student of psychology and co-author of the study. One study found that both men and women who participated in formal weight-loss programs gained significantly more weight over a two-year period than those who had not participated in a weight-loss program, she said.

So if dieting is counter-productive, what’s the alternative?

“Eating in moderation is a good idea for everybody, and so is regular exercise,” Mann said. “That is not what we looked at in this study. Exercise may well be the key factor leading to sustained weight loss. Studies consistently find that people who reported the most exercise also had the most weight loss.”

Update: A paper written by the UCLA researchers is available on their website: Medicare’s search for effective obesity treatments.

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