Exercise more, eat less? There’s a lot more to it, says scholar

“When someone says of an obese person, ‘They should just eat less and exercise more,’ I say if it were that simple, obesity wouldn’t be the worldwide epidemic that it is,” says author of a new article, who studies the genetics of obesity. "It's a complex problem because there are so many drivers." Those drivers are divided into four categories: social, environmental, behavioral and biological.

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