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Magnesium is an often forgotten electrolyte that is involved with a variety of metabolic activities in the body, including relaxation of the smooth muscles that surround the bronchial tubes in the lung, skeletal muscle contraction, and excitation of neurons in the brain. Magnesium acts as a cofactor in many of the body's enzyme activities.
Magnesium levels in the body are closely linked with sodium, potassium, and calcium metabolism; and are regulated by the kidney. Magnesium enters the body through the diet, and the amount of the chemical that is absorbed depends upon the concentration of magnesium in the body. Too little magnesium stimulates absorption from the intestine, while too much decreases the absorption.
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