I have just read a really interesting article that was published in the Journal of the American Medical Association earlier this week. The author, Zhao, and his colleagues did a meta-analysis of 33 studies that investigated the effect of calcium and vitamin D supplements on fracture risk. Over 55,000 people were included in these studies, so it is a very powerful piece of research.
What did they find? That taking these supplements appeared to have no effect on fracture risk! Whether taken individually, or in combination, calcium and vitamin D supplements appeared to have no effect on reducing fracture risk.
The study might be criticised for only looking at patients in institutional residential care (ie nursing homes), so the outcome may have been different for a younger, more mobile population. Nevertheless I thought that the outcome was interesting.
Anyone who is taking these supplements under the direction of their doctor should, of course, continue to do so until told otherwise. But maybe the writing is on the wall for this aspect of fracture risk management? Other ideas for reducing fracture risk are discussed in this brief video.