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Magnesium Supplementation Decreases the Risk of Stroke

In this study of 26,566 Finnish male smokers aged 50 to 69 years, it was found that a high magnesium intake reduced the risk of stroke by 15%.

According to investigators at the Karolinska Institute in Stockholm, Sweden, "An inverse association between magnesium intake and cerebral infarction (stroke) is biologically plausible. In addition to lowering blood pressure, magnesium may influence cholesterol concentration or the body's use of insulin to turn glucose into energy. Either of these mechanisms would affect the risk for cerebral infarction."

According to the study authors, earlier studies have linked magnesium, calcium, and potassium intake to lower blood pressure and a reduced risk for hypertension. Furthermore, the authors point out that some, though not all, randomized controlled trials have shown that supplementation with these minerals, alone or in combination, can reduce blood pressure.

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References:

Arch Intern Med. 2008;168:459-465.