| http://www.w3.org/ns/prov#value | - Supplementing with vitamin D can have a positive impact on the ability of the body to fight against illness such as cancer and seasonal affective disorder; it may also benefit chronic pain, autoimmune diseases and many other health conditions.ResearchThe Need for SunshineUVB exposure to the skin epidermis produces vitamin D, which then undergoes hydroxylation (addition of OH or hydroxyl group) fir
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