From the September 2014 issue of UCLA Health's Healthy Years (HY)
Ask the Doctor: Vitamin D; Low Back Pain; Staying Hydrated
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Q: A lot of people I know take vitamin D tablets. Why would I need extra vitamin D? What could happen if my vitamin D is low? A: By far, our best and most natural source of vitamin D comes from the sun. UVB rays from sunlight cause a chemical reaction in the skin that […]