Bananas offer an excellent source of potassium and vitamin B6. They are also a good source of fiber, magnesium, carbohydrates, vitamin C, riboflavin, and biotin. Since bananas have a lower water content than most other fruits, they contain more calories and more sugar than those fruits.
Bananas are packed with several nutrients, especially potassium. Potassium is one of the most important electrolytes in the body because it helps to regulate heart function and also fluid balance. The regulation of heart function and fluid balance are key factors in regulating blood pressure. Studies have shown that potassium rich foods are very effective in lowering blood pressure and protecting against heart disease and stroke.
Bananas contain a high amount of pectin. Pectin is a soluble fiber that lowers cholesterol, is soothing to the gastrointestinal tract, and normalizes bowel function. Studies have shown that plantain bananas may be effective in the treatment of peptic ulcers.