The top fat-burning foods raise the metabolism or take energy to digest, according to WebMD. They include chili peppers, low-fat dairy, coffee and green tea. Among fruits, WebMD recommends grapes, grapefruit, watermelon, pears, berries and apples. Eggs and sweet potatoes also make the list.
Some foods are considered fat-fighting because they are filling due to high water or fiber content. Examples are watermelon, cucumber and other raw vegetables. Oats and whole grains, such as cooked oatmeal, are filling and slow to digest, reducing cravings for food between meals. Soups which are not cream-based are also low-calorie and filling.
There is some research to support the list of fat-fighting food. There is evidence that cinnamon balances blood sugar, reducing cravings for food. There is also research supporting green tea's ability to reduce abdominal fat. Coffee and the chemical in chili peppers, capsaicin, boost the metabolism, but the effects are small. Studies show that those who regularly include low-fat dairy in their diets tend to be leaner than those who don't. Use common sense when considering these fat-fighting foods. Some of these foods are effective because they are naturally low-calorie and mostly water. The fat-burning power of coffee is negated when it is consumed with sugar and whipped cream.