Bananas are known for their high levels of potassium. This tropical fruit is an excellent source of this essential mineral, which plays a vital role in maintaining healthy body functions. Potassium helps regulate fluid balance, supports proper muscle contractions, and is essential for nerve function. A medium-sized banana typically contains around 400-450 mg of potassium, making it a convenient and nutritious snack. Including bananas in your diet can help meet daily potassium requirements and contribute to overall heart health and blood pressure regulation.