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Nutr Rev. 2003 Mar;61(3):107-13.

Prevalence of vitamin D insufficiency in Canada and the United States: importance to health status and efficacy of current food fortification and dietary supplement use.

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Office of Applied Research and Safety Assessment, Center for Food Safety and Applied Nutrition, Food and Drug Administration, HFS-025, 8301 Muirkirk Road, Laurel, MD 20708, USA.


Several recent studies have identified a surprisingly high prevalence of vitamin D insufficiency in otherwise healthy adults living in Canada and the United States. Most striking are the effects of latitude, season, and race. Also noteworthy is that dietary vitamin D is not reaching the population in greatest need, nor is it very protective against insufficiency. Fluid milk, as the predominant vehicle for vitamin D fortification, is apparently not very effective in staving off vitamin D insufficiency in adults in all populations at all times of the year.

[Indexed for MEDLINE]

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