By Marc Sorenson, EdD. Sunlight Institute….
While reading one of Dr. Michael Holick’s latest publications, I was intrigued that he quoted from a book published in 1915 called The Mortality from Cancer throughout the World. That book stated that indoor workers had 8 times the risk of dying of cancer compared to outdoor workers. Would this old study make you want to avoid sun exposure? Not unless you have a death wish!
Then, in 1937 Dr. Sigismund Peller determined that deadly internal cancers were 40% less common among people who spent long hours in the sun. A few years later Dr. Frank Apperley did research that demonstrated the following: North American death rates for major cancers among the inhabitants of cities between 30˚ and 40˚ north latitude were 85% higher than death rates among inhabitants of cities between 10˚ and 30˚; inhabitants of cities between 40˚ and 50˚ north latitude had cancer death rates 118% higher than those between 10˚ and 30˚; inhabitants between 50˚ and 60˚ had death rates from internal cancers 150% higher than those between 10˚ and 30˚.
There have been myriad studies in modern times, and one of the most compelling demonstrated that among women who totally covered themselves and thereby had no sun exposure, there was a more than a 10-times increase in the risk of the breast cancer. Stated in another way, that is a 1,000% increase in risk due to sun deficiency.
Do you think it is about time that we decided that sunlight is good for us? Just be sure not to burn.
 Holick, M. Biological Effects of Sunlight, Ultraviolet Radiation, Visible Light, Infrared Radiation and Vitamin D for Health. Anticancer Research 36: 1345-1356 (2016).
 Hoffman F The mortality from cancer throughout the world, Newark, N.J., The Prudential Press, 1915.
 Peller S. Carcinogenesis as a means of reducing cancer mortality. Lancet 1936; 2:552-56.
 Apperley, F. The relation of solar radiation to cancer mortality in North America. Cancer Res 1941;1:191-95.
 Bidgoli SA, Azarshab H. Role of vitamin D deficiency and lack of sun exposure in the incidence of premenopausal breast cancer: a case control study in Sabzevar, Iran. Asian Pac J Cancer Prev. 2014;15(8):3391-6.