What didn't matter

One weight-loss strategy is conspicuously absent from the list: going low-carb. Of course we asked about it, and it turned out that limiting carbohydrates was linked to higher BMIs in our survey. That doesn't necessarily mean low-carb plans such as the Atkins or South Beach diets don't work. "If you go to the hospital and everyone there is sick, that doesn't mean the hospital made them sick," says Eric C. Westman, M.D., associate professor of medicine and director of the Lifestyle Medicine Clinic at Duke University Medical School. "Just as people go to hospitals because they're ill, people may go to carb restriction because they have a higher BMI, not the other way around." At the same time, the findings do suggest that cutting carbs alone, without other healthful behaviors such as exercise and portion control, might not lead to great results.
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