One of the biggest heart health benefits of bananas is their high potassium content. Potassium is an essential mineral that helps regulate blood pressure and keep the heart rate steady.
According to the American Heart Association (AHA), adequate potassium in the diet can help reduce blood pressure and the risk of stroke.
On average, one banana contains about 400-450 mg of potassium, and the AHA recommends that adults consume about 4,700 mg of potassium per day to protect heart health.
Therefore, eating 1-2 bananas daily can help provide a large amount of potassium, especially for people at high risk of cardiovascular disease.
However, the World Health Organization and AHA also warn that banana consumption should be moderated. Eating too many bananas in a day can cause excess potassium, especially for people with chronic kidney disease, because weak kidneys have difficulty eliminating excess potassium.
This can lead to hyperkalemia, a dangerous condition that can adversely affect the heart, cause arrhythmias, and can even lead to cardiac arrest.
WHO also notes that healthy adults should eat bananas in moderation, no more than two a day, to maximize benefits without overloading the body.
Besides, eating bananas with foods rich in fiber and healthy fats is also a "golden rule" to help improve the effectiveness of bananas on cardiovascular health.
Nutritionists recommend combining bananas with nuts such as almonds, walnuts or with oats to provide adequate monounsaturated fats and soluble fiber.
Soluble fiber found in bananas and other foods can help reduce bad cholesterol in the blood, thereby reducing the risk of blood vessel blockage and protecting heart health.
In addition, the time of eating bananas also affects cardiovascular health. Bananas are an easily digestible fruit, rich in carbohydrates, so eating bananas in the morning or before exercise is ideal to provide energy and stabilize blood sugar.
However, WHO recommends not eating bananas too late at night, because the carbohydrate content can cause a slight increase in blood sugar and affect sleep quality.
