Archive for August, 2007

The sun, your skin, and Vitamin D

August 15, 2007

What about the sun’s beneficial effects?  The sun plays a major role in the body’s synthesis of vitamin D.  Ultraviolet B radiation is absorbed in the epidermis where 70% of previtamin D is synthesized.  Almost 100% of the previtamin D is converted to vitamin D within 4 hours of sun-exposure.  So, how much sun is required, and could strict sun avoidance lead to vitamin D deficiency?