How many bananas a day is the best in the clinic is not strictly defined, generally recommended to eat 1 to 2 bananas a day. Banana is a fruit with rich nutritional value, which contains carbohydrates, vitamin C, phosphorus, potassium, magnesium and other nutrients, each 100 grams of bananas contain 93 calories, of which 22 grams of carbohydrates, 1.4 grams of protein, 0.2 grams of fat, 1.2 grams of fiber. It can provide all kinds of nutrition needed by the human body and maintain the normal physiological function of the body. Generally about half a pound of fruit per day can be, so it is recommended to eat 1 to 2 bananas a day, if excessive intake is prone to affect the health of the body. Since the carbohydrates in bananas will be digested and absorbed quickly after entering the body, and then enter the blood circulation to affect the blood sugar level, it is therefore recommended to eat in moderation, and diabetic patients should eat a small amount. People who are allergic to bananas should not consume bananas to avoid allergic symptoms. It is also not recommended to consume bananas alone for a long period of time, but can be consumed together with other vegetables and fruits to ensure a balanced diet.