Health & Sexuality Archives: Harvard

9 things that can undermine your vitamin D level

Copyright © 2011 by Harvard University. According to 2011 National Center for Health Data statistics, almost one in three Americans has vitamin D blood levels below 20 nanograms per milliliter (ng/ml), the threshold that the Institute of Medicine (IOM) says is needed for good bone health. Some experts say even higher levels are needed. Figuring […]

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