Potassium regulation is essential for maintaining proper cellular function and overall health. The body primarily regulates potassium levels through the kidneys, which filter excess potassium from the blood and excrete it in urine. This process helps to keep potassium levels within a narrow range, which is crucial for nerve function, muscle contraction, and heart health. Dietary intake also plays a significant role in potassium regulation. Foods rich in potassium, such as bananas, spinach, and potatoes, can help maintain adequate levels. However, individuals with certain health conditions, like kidney disease, may need to monitor their potassium intake closely to prevent complications.