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The Boston Globe talks to Dr. David L. Katz, director of the Yale Prevention Research Center in New Haven, about the misconceptions surrounding low-carb diets.

"If you traded your favorite breakfast cereal for steak and eggs in order to lose weight on a low-carbohydrate diet, you'll be in for a big disappointment," the Globe writes. "Sure, you can lose 5 to 10 pounds in a couple of weeks by eliminating bread, pasta, fruits, most vegetables, and dairy products -- just like the books say. But much of that weight loss will be water. And if you, like most people, fall off the program, the weight you regain will be fat and flab."

Low-carb diets, according to Katz, actually hurt long-term weight loss efforts because on such diets, the body converts muscle to fat…and having less muscle makes it harder to lose weight.

Furthermore, Katz says that low-carb diets make the mistake of lumping all carbs together. "Cheese doodles aren't the same as oatmeal," he says. The best solution is - big surprise - moderation and exercise.

And then there's the psychological angle. Katz tells the Globe that carbohydrates increase serotonin levels. Serotonin makes you happy and relaxed. Lack of serotonin makes you cranky.
KC's View:
Y'know what makes us cranky? A bunch of doctors who can't seem to agree about the best way to lose weight.