Vitamin D and Health (PDF)

The Scientific Advisory Committee on Nutrition (SACN) previously considered the evidence on vitamin D and health in 2007. It concluded that there were insufficient data at that time to reconsider the Dietary Reference Values (DRVs) for vitamin D set by the Committee on Medical Aspects of Food and Nutrition Policy (COMA) in 1991. Since vitamin D is synthesised in the skin when it is exposed to sunlight, COMA considered that dietary intakes of vitamin D were not necessary for most of the UK population (aged 4-64y). It was assumed that skin synthesis of vitamin D in the summer would be enough to cover requirements during the winter. Reference Nutrient Intakes (RNI) were therefore set only for groups considered at risk of vitamin D deficiency.

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