The primary use of potassium in the body is to maintain proper cellular function and fluid balance. As an essential electrolyte, potassium helps regulate blood pressure, muscle contractions, and nerve signaling. It plays a crucial role in maintaining the body’s acid-base balance and is essential for healthy heart function. A diet rich in potassium can help reduce the risk of hypertension and cardiovascular diseases. Foods high in potassium include bananas, oranges, spinach, and potatoes. Maintaining adequate potassium levels is vital for overall health, as both deficiency and excess potassium can lead to serious health complications.