Letter

Vitamin D and falls

Time for a moratorium on vitamin D meta-analyses?

BMJ 2009; 339 doi: 10.1136/bmj.b4394 (Published 28 October 2009)
Cite this as: BMJ 2009;339:b4394

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  1. Mark J Bolland, senior research fellow,
  2. Andrew Grey, associate professor of medicine ,
  3. Ian R Reid, professor of medicine
  1. 1Department of Medicine, University of Auckland, Auckland 1142, New Zealand,
  1. m.bolland{at}auckland.ac.nz

    In 2003, Latham and colleagues performed a systematic review and meta-analysis of the effect of vitamin D or its metabolites on falls and found no effect.1 At least eight further meta-analyses have been performed, including that reported by Bischoff-Ferrari and colleagues.2 Four reported a positive effect, and five no effect, or benefits limited to certain subgroups. The differences between conclusions often …

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