Calcium is not only the soft, gray mineral that chemists call calcium, it's the fifth most abundant element on earth, it is the fifth most abundant element in human beings.
Most people know that we needs lots of calcium—around a thousand milligrams a day, more for pregnant women and the elderly—for healthy bones and teeth.
But they not may be aware that calcium plays a vital role in the transmission of nerve impulses, the constriction and relaxation of blood vessels, and even in the production of certain hormones such as insulin!
Calcium is not only the soft, gray mineral that chemists call calcium, it's the fifth most abundant element on earth, it is the fifth most abundant element in human beings.
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