A new review of existing studies points toward a potential role for vitamin D in helping to prevent dental caries, or tooth decay, according to Medical News Today. The review is published in the December issue of Nutrition Reviews. It encompassed 24 controlled clinical trials, spanning the 1920s to the 1980s, on approximately 3,000 children in several countries. These trials showed that vitamin D was associated with an approximately 50% reduction in the incidence of tooth decay.

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