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Legumes

Good for: Weight Loss

Beans are one of your best bets if you're trying to drop pounds, says Joseph Colella, MD, a bariatric surgeon at Magee-Womens Hospital in Pittsburgh. "Your body has to work to break down the bean to get through the fiber," he explains, "so you're actually expending energy to digest it."

Even better, Dr. Colella says, the protein in legumes activates an "I'm satisfied" message in the hunger center of your brain.

Try this recipe: Power Nachos

Next: Spinach