This mineral helps keep your heart beating regularly, and one study found that taking potassium reduced systolic blood pressure (the top number). Reducing blood pressure lowers the risk of stroke, heart disease, heart failure, and kidney disease.
The recommended intake of potassium for teens and adults is 4,700 mg a day. Many foods contain potassium, so a deficiency is rarely caused by an inadequate diet. Potassium-rich foods include many fruits and vegetables, milk, meat, and whole grains.