The human body requires at least 100 milligrams of potassium daily to support key processes. A high potassium intake helps decrease the risk of stroke, lowers blood pressure, protects against loss of muscle mass, preserves bone mineral density, and reduces the formation of kidney stones. The primary function of potassium in the body include regulating fluid balance and controlling the electrical activity of the heart and other muscles. Adults should be consuming 4,700 milligrams (mg) of potassium a day.