“Despite constant insistence that we lose weight for our health and track the simple arithmetic of calories in, calories out, there is no data illustrating that dieting achieves long-term weight loss. To the contrary, constant dieting may make weight loss more difficult, as our metabolisms fight back, searching for the stasis of a familiar, fatter body.57 A major study following contestants from the television show The Biggest Loser showed that despite their dramatic weight loss on camera, most contestants were unable to maintain their smaller size, despite hours of working out each day. The study’s results were staggering: after their extreme televised dieting, every contestant’s body burned fewer calories at rest than it did at the beginning of the competition—and one contestant was shown to burn eight hundred fewer calories each day than expected for a peer of the same gender and size.58 Those results aren’t limited to reality TV contestants. As one Slate writer put it, addressing dieters, “You’ll likely lose weight in the short term, but your chances of keeping it off for five years or more is about the same as your chance of surviving metastatic lung cancer: 5 percent. And when you do gain back the weight, everyone will blame you. Including you.”
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Aubrey Gordon,
What We Don't Talk About When We Talk About Fat