Study: Blacks have lower vitamin D levels, but higher bone-mineral density

11/20/2013 | MedPage Today (free registration) · HealthDay News

Concentrations of total 25-hydroxyvitamin D and vitamin D-binding protein were lower among black adults than whites, but bioavailable 25-hydroxyvitamin D levels were the same for both groups, a study showed. Blacks also had greater bone-mineral density as well as adjusted mean calcium levels than did their white counterparts. Low 25-hydroxyvitamin D frequently signals vitamin D deficiency, but the findings suggest that "definition of vitamin D deficiency needs to be rethought," lead researcher Dr. Ravi Thadhani reported in The New England Journal of Medicine.

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