If you're looking to cut down on the foods you eat, there's a simpler solution than dieting. Just a small amount of chicken soup before dinner can go a long way, according to Duke University researchers. In fact, if you consume chicken soup as an appetizer, it can reduce the amount of food you eat by 20 percent. "Fatty soup as an appetizer reduces food intake in both lean and obese subjects--this may have a therapeutic potential for obesity," said Dr. D.D. Chen.