Low-fat or low-carb: the DIETFITS study

“How much do calories count?” asked the New York Times headline in February (below a picture of a Nutrition Facts label in flames). Huh? The Times was reporting the results of DIETFITS, a year-long $8 million study on 609 overweight or obese people. But DIETFITS didn’t test whether—never mind how much—calories count.
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