5. Apples and Pears!

Overweight women who ate the equivalent of three small apples or pears a day lost more weight on a low-calorie diet than women who didn't add fruit to their diet, according to researchers from the State University of Rio de Janeiro. Fruit eaters also ate fewer calories overall. So next time you need to satisfy a sugar craving, reach for this low-calorie, high-fiber snack. You'll feel full longer and eat less.

6. Broccoli!

Study after study links calcium and weight loss. Broccoli is not only high in calcium, but it's also loaded with vitamin C, which boosts calcium absorption. This member of the nutritious cabbage family also has plenty of vitamin A, folate and fiber. And, at just 20 calories per cup, this weight-loss "superfood" not only fights fat but also contains powerful phytochemicals that boost your immunity and protect against disease.