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Vitamin D Prevents Colds, Flu, Especially Among The Vitamin D Deficient

February 22, 2017: 12:00 AM EST
A meta-study led by British scientists finds strong evidence that vitamin D supplementation can actually reduce the occurrence of acute upper respiratory infections. It is well known that the vitamin D is essential for healthy bones and muscle, but there has been doubt about its disease prevention powers. In this study, researchers analyzed pooled data from 25 clinical trials involving 10,993 patients in 14 countries. Vitamin D prevented colds and flu in some trials, but not others. The data showed that vitamin D supplementation worked best in people with the lowest vitamin D levels. Daily or weekly supplementation, rather than more widely spaced doses, also provided the best protection. [ Vitamin D-rich cod liver oil capsules image credit: © Wikipedia ]
Adrian R Martineau et al., "Vitamin D supplementation to prevent acute respiratory tract infections: systematic review and meta-analysis of individual participant data. ", BMJ, February 22, 2017, © Martineau et al.
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