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Many babies born short of vitamin D

Even in the womb, babies face a high risk of vitamin D deficiency, a new study finds. The sunshine vitamin is a building block for a hormone that not only helps build bone and muscle, but also fights infections and many chronic diseases.

Lisa M. Bodnar of the University of Pittsburgh School of Public Health and her colleagues collected blood samples from 400 first-time moms early in their pregnancies and again at delivery. Half the women were black, and half were white.

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