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Calcium plus vitamin D supplementation does not reduce joint symptoms in postmenopausal women
Date:8/16/2013

Philadelphia, PA, August 15, 2013 A team of investigators systematically analyzed the effect of calcium and vitamin D supplementation on joint symptoms in a rigorous and controlled study of postmenopausal women. They found that supplementation did not reduce the severity of joint symptoms reported by the participants. Their results are published in the Journal of the Academy of Nutrition and Dietetics.

The influence of low calcium and vitamin D deficiency on joint symptoms has been studied with mixed results. Only some observational studies have associated vitamin D with knee osteoarthritis and results from full-scale randomized trials have been sparse. "In the current study, we addressed for the first time in a full-scale, randomized clinical trial setting, the clinically relevant question of whether postmenopausal women using calcium and vitamin D supplements in currently recommended dosage would experience any favorable effect on joint pain or swelling, common symptoms in postmenopausal women," says lead investigator Rowan T. Chlebowski, MD, PhD, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center in Torrance, California.

Using data from the Women's Health Initiative (WHI) calcium plus vitamin D supplementation trial, researchers identified a subgroup of 1,911 postmenopausal women for the current study, who had been randomized to receive calcium carbonate with vitamin D3 daily or placebo and had undergone serial joint symptom assessment. Responses to a questionnaire provided qualitative information on joint pain and joint swelling before entry and two years after randomization.

Between the daily supplement use and placebo groups, joint pain and swelling at baseline entry was comparable, at more than 70 percent. After two years, analysis revealed no statistically significant difference for the frequency or severity of joint pain or swelling.

The research team also evaluated data to determine the
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Contact: Eileen Leahy
andjrnlmedia@elsevier.com
732-238-3628
Elsevier Health Sciences
Source:Eurekalert

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