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Undark’s home for breaking news, brisk analysis, and reader discussions at the intersection of science and society.

Obesity through thick and thin

Fat, that staple of health writers everywhere, claimed even more ink in Wednesday’s papers with the appearance of the April 5 JAMA. Inside were two faces of the issue–calorie restriction (at last, a hint of evidence that it does some things in humans that seem beneficial, though the study lasted only six months) and the

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