Bell peppers
Vitamin C is an unsung weight loss weapon, and one bell pepper provides twice your daily dose.Chili powder
This spicy powder contains capsinoids, which burn belly fat. When volunteers in a 2009 study popped 6 g of capsinoid oil a day, they lost five times as much fat as those who didn't.
Grapefruit
When volunteers ate half a grapefruit before every meal in a University of Arizona study, they shaved an inch off their waists, thanks to naringenin, which experts say may help burn fat. (Not a fan of plain grapefruit?Romaine lettuce
Filling up with a leafy green can trim the overall number of calories you eat by 10%; 2 cups of romaine rack up half your daily fill of vitamin A, plus 113% of bone-building vitamin K.Nuts
Their satisfying trifecta of protein, healthy fat, and fiber can help you slim down. To slow your intake, choose nuts in their shells.
Canned salmon
Protein requires more calories to digest and keeps you feeling full. With nearly 17 g of it per 3 ounces, salmon makes getting your fill of protein a breeze.
Dark chocolate chips
These flavor bombs put the brakes on a craving. The little pieces fool you into thinking you're getting more, helping you eat less, finds new research.