7. Regulates Your Blood Pressure
Bananas are incredibly rich in potassium (one banana contains 10% of the daily recommended intake). Potassium is an important mineral used by the body for many different biological systems, but most crucially, regulating blood pressure.
Eating a diet rich in potassium-giving foods such as bananas, can help to keep our blood pressure at a healthy level due to the impact of potassium on the walls of the blood vessels. Potassium helps to relax, or dilate, the blood vessels, helping to lower blood pressure. It also helps us rid ourselves of sodium by passing it in the urine. If sodium levels are too high, it can increase blood pressure.
Studies, such as this one in the Journal of the American College of Cardiology in 2011, suggest that a potassium-rich diet could lower our risk of heart disease by 26%.
Summary:
Dues to their high potassium content, bananas help to lower blood pressure, in turn helping to lower our risk of heart disease.