Vitamin D deficiency has been linked to increased risk for many common and serious diseases, including some common cancers, diabetes, cardiovascular disease and osteoporosis. Studies suggest that exposure to sunlight which enhances the production of vitamin D in the skin, prevents many chronic diseases. Vitamin D is essential for the formation of growth and health of bones. Additionally it is necessary for normal calcium absorption and immune function. It also improves muscle strength and helps reduce inflammation.

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