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Biological Effects of Sunlight

Paper Review: Biological Effects of Sunlight, Ultraviolet Radiation, Visible Light, Infrared Radiation and Vitamin D for Health Michael F. Holick, PhD, MD Boston University Medical Center Anticancer Research March 2016 Read Paper History of...

Role of Food in D Deficiency

October 21, 2015 For most societies, food is not the primary source of vitamin D. The National Institutes of Health (NIH) recommends 600 IU/day of vitamin D for anyone 1-70 years old and 800...

Does vitamin D prevent colds and flu?

September 2, 2015 There has been a lot written about the decrease in the incidence of colds and flu (see our own chart below) and, the evidence is strong for prevention. But, what happens...