Abstract
There is widespread acknowledgment of the presence of vitamin D deficiency in the community and the pressing need to address this deficiency. Currently, the major regulatory authorities recommend vitamin D intakes in the order of 10–20μg/day, depending on age and whether the serum 25-hydroxyvitamin D (25(OH)D) target is ≥25 or ≥50nmol/L. Naturally rich sources of vitamin D are few and infrequently consumed, and nutrition surveillance data from various countries have indicated that habitual vitamin D intakes in the population are much lower than the recommendations. There is a need for sustainable food-based strategies to bridge the gap between current and recommended intakes of vitamin D to minimize the prevalence of serum 25(OH)D concentrations <30nmol/L, without increasing the risk of habitual excessive intakes. This chapter details the current evidence basis for strategy development, using both nutrient addition to manufactured staples and vitamin D enhancement of produce.
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