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< 0.001). "Dairy/dairy alternatives" were the most common fortification vehicle, but with relatively low levels of vitamin D. "Foods high in sugar/fat" and "hot beverages" had the highest levels. Most did not specify the use of vitamin D2/D3, and few used health claims. Global inconsistencies observed in vitamin D fortification supports the need for regional-specific guidance that is cognisant of the population's vitamin D-need and dietary patterns, to help consumers meet vitamin D requirements.
Frazer et al. (Fri,) studied this question.