More on Magnesium

When can magnesium deficiency occur?

Symptoms of magnesium deficiency are rarely seen in the US. There is concern that many people may not have enough body store of magnesium because dietary intake may not be high enough, Having enough stores of magnesium may be protective against disorders such as cardiovascular disease and immune dysfunction.

The health status of the digestive system and the kidneys significantly influence magnesium status. Magnesium is absorbed in the intestines and then transported through the blood cells and tissues. Approx. 1/3 - 1/2 of dietary magnesium is absorbed in the body. Gastrointestinal disorders that impair absorption such as Crohn's disease can limit the body's ability to absorb magnesium. Chronic or excessive vomiting and diarrhea may also result in magnesium depletion.

Healthy kidneys are able to limit urinary excretion of magnesium to make up for low dietary intake. Excessive loss of magnesium in the urine can be side effects of some medications and can also occur in cases of poorly-controlled diabetes and alcohol abuse.

Early signs of magnesium deficiency include loss of appetite, nausea, vomiting, fatigue, and weakness. As magnesium deficiency worsens, numbness, tingling, muscle contractions and cramps, abnormal heart rhythms, seizures, coronary spasms can occur, and personality changes. Severe magnesium deficiency can result in low levels of calcium in the blood (hypokalemia).

Many of these symptoms are general and can result from a variety of medical conditions other than magnesium deficiency. It is important to have a physician evaluate health complaints and problems so that appropriate care can be given.

Next, what happens when you get too much magnesium.

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