October 30, 2013
Increasing vitamin D levels had no effect on calcium absorption in young women, researchers reported.

In an ancillary result from a randomized clinical trial, women who started out with vitamin D insufficiency were brought up to normal levels through supplements over a 1-year period, according to Christopher Gallagher, MD, of Creighton University Medical Center in Omaha, and colleagues.

But the supplementation had no effect on calcium absorption at any dose, Gallagher and colleagues reported online in the Journal of Bone and Mineral Research.
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