[Hormonal regulation and metabolic inter-relations of magnesium]

Magnesium ion is of great importance in physiology by its intervention in 300 enzymatic systems, its role in membrane structure and its function in neuromuscular excitability. The skeleton is the first pool of magnesium in the body. Intestinal absorption, renal metabolism, bone accretion and resorption of magnesium are very similar to those of calcium. Magnesium metabolism is accurately controlled, in particular by parathyroid hormone, 25 - dihydroxy vitamin D3, calcitonin, catecholamine and estrogens. The main regulation mechanisms of magnesium metabolism are located in the kidney which is the principal excretory organ.