Potassium plays a crucial role in cardiovascular health by helping regulate blood pressure and maintaining proper heart function. It assists in balancing fluids in the body and supports the proper functioning of muscles and nerves. Adequate potassium intake can help offset the effects of sodium, which is linked to high blood pressure. Moreover, a diet rich in potassium from sources like fruits, vegetables, and legumes can reduce the risk of heart disease and stroke, contributing to overall heart health.