Dr. Mercola and Dr. Holick Discuss Vitamin D

Natural health expert and Mercola.com founder Dr. Joseph Mercola interviews Dr. Michael Holick, one of the leading vitamin D researchers, and the author of the book, The Vitamin D Solution.

Michael F. Holick, PhD, MD, is Professor of Medicine, Physiology and Biophysics; Director of the General Clinical Research Unit; and Director of the Bone Health Care Clinic and the Director of the Heliotherapy, Light, and Skin Research Center at Boston University Medical Center. After earning a PhD degree in biochemistry, a medical degree, and completing a research postdoctoral fellowship at the University of Wisconsin, Madison, Dr. Holick completed a residency in medicine at the Massachusetts General Hospital in Boston.

As a graduate student he was the first to identify the major circulating form of vitamin D in human blood as 25-hydroxyvitamin D3. He then isolated and identified the active form of vitamin D as 1,25-dihydroxyvitamin D3. He determined the mechanism for how vitamin D is synthesized in the skin, demonstrated the effects of aging, obesity, latitude, seasonal change, sunscreen use, skin pigmentation, and clothing on this vital cutaneous process.

Dr. Holick is a Diplomate of the American Board of Internal Medicine, a Fellow of the American College of Nutrition and the American Association of Physicians. He is the recipient of numerous awards and honors, including the American Skin Association’s Psoriasis Research Achievement Award, the American College of Nutrition award, the Robert H. Herman Memorial Award, and many other awards.