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Does Sunlight Have a Role in Immune Health?

In our last post, we discussed a paper by Drs. Grant and Giovannucci on the 1918-1919 Influenza pandemic, highlighting the relationship between northern latitude and UVB, and incidence of pneumonia and case fatalities due...

Seasonal Vitamin D Levels

Seasonal trends have been observed in several diseases. Vitamin D deficiency is known to be more prevalent during particular times of the year, which may contribute to an increased risk of certain seasonal diseases....

Tanning as a Source of Vitamin D

Two different research groups conclude the US RDA is off by an order of magnitude GrassrootsHealth scientists and staff have published a research letter, citing the D*action data, calling for the Institute of Medicine...