Magnesium, the Mimic/Antagonist of Calcium

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Abstract
Magnesium, the fourth most abundant metal in living organisms, is distributed in three major compartments in the body: 65 per cent in the mineral phase of skeleton, 34 per cent in the intracellular space, and only 1 per cent in the extracellular fluid.1 It is difficult to measure intracellular and bone magnesium, but most data indicate that the bone compartment of magnesium reflects changes in extracellular magnesium, whereas intracellular magnesium remains stable despite wide fluctuations in serum magnesium.Dietary magnesium amounts to approximately 300 to 360 mg (24 to 30 meq) per day in the United States, with principal sources . . .