Two bananas a day Controls High Blood Pressure A study suggests people will have to eat five bananas a day to have half effect of a blood pressure controlling pill. According to scientists two bananas a day can help control high blood pressure, offering a cheap alternative to expensive drugs. The finding supports earlier research that potassium-rich food such as bananas could play a role in controlling blood pressure. A study suggested people would have to eat five bananas a day to have half the effect of a blood pressure controlling pill. While researchers in India have reported that blood pressure fell by 10% in people who ate two bananas daily for a week. Source: Radio Pakistan