Half of Black Teens May Be Vitamin D Deficient

WEDNESDAY, March 4 (HealthDay News) -- Many teens today, especially black teens, aren't getting enough of vitamin D, the so-called sunshine vitamin that is essential for cells to function, say researchers from Weill Cornell Medical College in New York City.

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Vitamin D deficiency has been linked to many chronic diseases, including heart disease, diabetes, immune system problems and inflammatory diseases.

"There is evidence that the levels of vitamin D we have been using in the past may have been too low," said lead researcher Dr. Sandy Saintonge, a fellow in general preventive medicine at Weill Cornell.

Vitamin D is measured by blood levels of 25-hydroxyvitamin D. Currently, people whose vitamin D level is less than 11 nanograms per milliliter (ng/mL) are classified as deficient, but many experts believe that the minimum level of vitamin D should be at least 20 ng/mL.

Several factors can interfere with the amount of vitamin D the body produces, including diet, sun exposure, use of sunscreen and skin color. Blacks take in less of the sun's rays than whites, causing less vitamin D production, Saintonge noted.

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