Calcium, vitamin D in older women
This article was originally published in The Tan Sheet
Executive Summary
Postmenopausal women did not experience a drop in blood pressure or hypertension risk after seven years of calcium plus vitamin D3 supplementation, says a study published in the November issue of the American Heart Association's Hypertension journal. In the randomized, placebo-controlled trial, researchers led by Karen L. Margolis of Minneapolis-based HealthPartners Research Foundation assigned 36,282 subjects to take 1,000 mg of elemental calcium plus 400 IU of vitamin D3 daily or a placebo. The report says the trial was longer than other studies and lost few subjects during follow-up. The large subject pool allowed researchers to study subgroups hypothesized to benefit more from calcium and vitamin D, including blacks, Asians and hypertensive women. No subgroup displayed signs of benefiting from the supplement, the study says. A study of U.S. men and women published July 2007 found an inverse link between vitamin D levels and blood pressure (1"The Tan Sheet" Aug. 13, 2007, p. 10)
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