Researchers from the University of Zurich examined 20 trials studying fracture rates in patients over 65 years old. The trials, which included a total of 83,165 patients, looked at the effect of giving patients vitamin D rather than calcium or placebo.
The meta-analysis showed that vitamin D intake reduced patients' risk of non-vertebral fracture in a dose-dependent manner. Higher doses (482-770 IU per day) reduce fractures by at least a fifth in the over-65s, the researchers discovered.
The finding suggests that the use of higher received or achieved doses of vitamin D should be explored in future studies in order to maximise reductions in fracture risk.
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