What is Magnesium deficiency?

Magnesium deficiency: Can occur due to inadequateintake or impaired intestinal absorption of magnesium. Low magnesium (hypomagnesemia) isoften associated with low calcium (hypocalcemia) and low potassium (hypokalemia).Deficiency of magnesium causes increased irritability of the nervous system with tetany(spasms of the hands and feet, muscular twitching and cramps, spasm of the larynx, etc.).According to the National Academy of Sciences, the Recommended Dietary Allowances ofmagnesium are 420 milligrams per day for men and 320 milligrams per day for women. Theupper limit of magnesium as supplements is 350 milligrams daily, in addition to themagnesium from food and water.