Bananas contain a host of nutrients which are necessary to the human body, like vitamins, iron, carbohydrates and proteins. They also increase the power of your brain because they contain substances that cause concentration and alertness at all time. Besides this, they can help to control the body temperature in its normal level. By eating bananas elderly people can control their weight. For young people, they are suitable for those who wants to reduce obesity because bananas contain nutrients but are low-fat and low-cholesterol. Bananas contain a bit of potassium and much more sodium. Potassium helps to reduce blood pressure. In India people believe that by eating two bananas per day your blood pressure can be reduced by up to ten percent within a period of one week.