Potassium is one of the seven essential macro minerals. The human body requires at least 100 milligrams of potassium daily to support key processes. A high potassium intake reduces the risk of overall mortality by 20 percent. It also decreases 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 functions of potassium in the body include regulating fluid balance and controlling the electrical activity of the heart and other muscles. Fast facts on potassium: