Raspberries

Raspberries are a great source of fiber some of it soluble in the form of pectin, which helps lower cholesterol. One cup of raspberries has 8 grams of fiber and a study in the Journal of Nutrition suggests that eating more fiber may help prevent weight gain or even promote weight loss. Over the course of a two-year study, researchers found that when study participants boosted their fiber by 8 grams for every 1,000 calories, they lost about 4 1/2 pounds. Try it for yourself. If youre consuming 2,000 calories per day, aim to increase your fiber by 16 grams.