Vitamin D supplements may not help prevent disease

Taking vitamin D supplements may not be as beneficial to your health as often suggested, according to new research from France.

Previous studies have concluded that vitamin D may help prevent certain diseases, including Parkinson’s, dementia and cancer. However, the new study calls into question a causal relationship between vitamin D consumption and disease prevention.

Philippe Autier from the International Prevention Research Institute in Lyon analyzed data from 290 studies and 172 randomized trials examining the effects of vitamin D on health, excluding bone-related diseases. He found that in the clinical trials, participants who were given vitamin D supplements were not at any less risk for developing diseases than people who did not take vitamin D. Nor did taking the supplements result in any positive effects in preventing diseases, according to his analysis.

The findings, written in The Lancet Diabetes and Endocrinology, suggest that taking vitamin D may not prevent diseases; rather, certain processes involved in diseases may cause vitamin D levels to decrease.

Researchers not involved in the study said that Autier's study is limited, and that more research examining the relationship between vitamin D and diseases is necessary before individuals make any changes in their use of vitamin D supplements.

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Sourced from: BBC, Doubt cast on vitamin D's role against disease