Magnesium is a mineral that is critical to the body’s function. Magnesium helps maintain normal blood pressure and is essential for strong bones, muscle function as well as maintaining a steady heart rhythm. Magnesium also plays a vital role in detoxification from environmental pollutants, heavy metals and other toxins.
An adult body contains approximately 25 g magnesium, with 50% to 60% present in the bones and most of the rest in soft tissues. Less than 1% of total magnesium is in blood serum, and these levels are kept under tight control. Normal serum magnesium concentrations range between 0.75 and 0.95 millimoles (mmol)/L. Hypomagnesemia is defined as a serum magnesium level less than 0.75 mmol/L. Magnesium homeostasis is largely controlled by the kidney, which typically excretes about 120 mg magnesium into the urine each day. Urinary excretion is reduced when magnesium status is low.
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