AHRQ releases evidence on the health benefits of vitamin D and calcium
Research Activities, October 2009
A new report by the Agency for Healthcare Research and Quality (AHRQ) reveals considerable uncertainty about the possible health benefits of consuming vitamin D and calcium, largely because of conflicting study findings or because specific health outcomes have not been studied. The review was conducted by the AHRQ-supported Tufts Evidence-based Practice Center in Boston under the direction of Joseph Lau, M.D., professor of medicine.
The authors reviewed 165 research reports and 11 systematic reviews, which included more than 200 additional research reports. All these studies evaluated serum 25-hydroxyvitamin D concentration, an indicator of the amount of vitamin D in a person's body, vitamin D supplementation, dietary or supplementary calcium intake, or the two nutrients in combination.
The report was commissioned by the Office of Dietary Supplements of the National Institutes of Health, the Food and Drug Administration, the Public Health Agency of Canada, and Health Canada, to make available independently developed, updated findings for dietary and supplemental calcium, vitamin D, and combinations of the two nutrients for a wide range of health outcomes. The results are for possible consideration by a committee of the Institute's Food and Nutrition Board, which is currently reviewing the 1997 Dietary Reference Intakes recommendations for the amounts of vitamins and minerals that people should consume daily.
For details, go to Vitamin D and Calcium: Systematic Review of Health Outcomes available at .