Did you know that kiwi, besides being delicious, is a very good source of dietary fiber? Diets that contain lots of fiber can reduce high cholesterol levels, which may reduce the risk of heart disease and heart attack. Fiber is also good for filling you up and slowing down your appetite -- a great advantage for those wanting to lose weight. Kiwifruit is literally filled with fiber. All those little black seeds combine for a good dose of insoluble fiber, which aids digestion by decreasing the transit time of stools through your system. But kiwifruit also offers soluble fiber, providing bulk that promotes the feeling of fullness -- a natural diet aid. By creating gel-like substances that trap bile acids, it has the potential to reduce blood cholesterol levels.