Lean and Hungrier

Is a recently discovered hormone the reason why folks who lose weight can't keep it off?

Like millions of less celebrated Americans, Carnie Wilson was not just fat. At 5 ft. 3 in. and more than 300 lbs., she was morbidly obese--more than 100 lbs. above her ideal body weight. After trying all sorts of diets that didn't work, the daughter of Beach Boy Brian Wilson and member of the now disbanded pop trio Wilson Phillips turned to a drastic last resort: gastric-bypass surgery. Doctors sewed up most of her stomach, reducing it to a tiny receptacle that holds several tablespoonfuls at best, and isolated much of her small intestine to reduce nutrient absorption. Result: filled to...

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