White Potato have smoother, thinner, lighter-colored skin. The skins are so thin that they add a slightly pleasant texture to creamy mashed potatoes and yet hold their shape when boiled. These are Waxy potatoes have high water content and are low in starch. Potatoes are a good source of fiber, which can help you lose weight by keeping you full longer. Fiber can help prevent heart disease by keeping cholesterol and blood sugar levels in check. Potatoes are also full of antioxidants that work to prevent diseases and vitamins that help your body function properly.