Our bodies need vitamin D, but many peoples' indoor lifestyles keep them from getting enough via sunlight exposure. So, how can someone find out just how high their D levels are? Well, blood sampling works, although levels can now also be determined simply by analyzing one of the person's hairs.
.. Continue Reading Vitamin D levels can be painlessly measured in the hairCategory: Health & Wellbeing
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from New Atlas (Gizmag) https://ift.tt/2BTfL5H
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