But in Whites, Not Blacks
Researchers from Johns Hopkins University School of Medicine have found an association between vitamin D deficiency and higher rates of death from heart disease and peripheral artery disease in adults. However, when studying the link more closely, they found that lower blood levels of vitamin D were more greatly associated with stroke in white Americans versus black Americans. Although African Americans suffer from higher rates of stroke and are more likely to be vitamin D deficient, the two do not appear to be statistically related, according to the researchers. They suggest a possible adaptation to vitamin D deficiency, as evidenced by an overall greater bone density. The IOM is reviewing the recommendation for adequate dietary intake of vitamin D.