An apple a day helps keep the pounds at bay. According to The Flex Diet by James Beckerman, MD, a cardiologist with Providence Heart & Vascular Institute in Portland, Oregon, and MedHelp's weight loss and healthy lifestyle expert, when you eat fruit instead of a different snack with the same amount of calories, you tend to lose weight. "Apples are a low energy density food, or, said another way, are a large volume food with few calories, high water content and lots of fiber, all of which help fill you up," said Dr. Beckerman.
