Helotes, TX - (SBWIRE) - 12/13/2016 - Sunlight exposure is necessary for vitamin D synthesis in the skin. It is transported to the liver and converted to 25-hydroxyvitamin D. Most of us don't get the required 20 minutes each day of direct sun on our skin to maintain healthy blood levels of vitamin D. Vitamin ... Continue reading With Vitamin D Deficiency More Prevalent Than Previously Thought, Pain & Stress Center Presents Solution →With Vitamin D Deficiency More Prevalent Than Previously Thought, Pain & Stress Center Presents Solution was first posted on December 13, 2016 at 8:17 am.