Calcium is one of the basic constituents of human body. Nearly 99 percent of the body’s calcium is stored in the bones and teeth where it plays two important roles. First, it is an integral part of the bone structure. Second, bone calcium serves as a bank that can release calcium to the body fluids in case of slightest drop in blood calcium concentration. Many people have the idea that, once deposited in bone, calcium (together with other minerals of bone) stays there forever-that once a bone is built, like a rock. Not so. The minerals of bones are in constant flux, with formation and dissolution taking place every moment.
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