4  major  elements  consisting 91.2%  of  earth  are  iron  (32.1%), oxygen  (30.1%),  silicon  (15.1%), and magnesium (13.9%).  This major and abundant element, magnesium, known as a king of mineral, is vital to maintain and enhance our daily health and its ions are essential to cells of all known living organisms.  Over 300 enzymes require the presence of magnesium ions for their catalytic action.   It is also known to help stabilize nerve excitation, maintain blood pressure, and function heart and muscle properly in human health.  Recent studies have been finding more about great influences of the miracle element, magnesium, to  human heath.  You can learn more about the importance of magnesium for our health from the book written by Dr. Carolyn Dean (The Magnesium Miracle, Revised and Update Edition, 2006).