340,000 US deaths annually due to insufficient sun (some due to low vitamin D)
Insufficient Sun Exposure Has Become a Real Public Health Problem
Int. J. Environ. Res. Public Health 2020, 17(14), 5014; https://doi.org/10.3390/ijerph17145014
by Lars Alfredsson 1,Bruce K. Armstrong 2,D. Allan Butterfield 3OrcID,Rajiv Chowdhury 4,Frank R. de Gruijl 5,Martin Feelisch 6,Cedric F. Garland 7,Prue H. Hart 8OrcID,David G. Hoel 9,*OrcID,Ramune Jacobsen 10OrcID,Pelle G. Lindqvist 11OrcID,David J. Llewellyn 12,Henning Tiemeier 13,Richard B. Weller 14OrcID andAntony R. Young 15
This article aims to alert the medical community and public health authorities to accumulating evidence on health benefits from sun exposure, which suggests that insufficient sun exposure is a significant public health problem. Studies in the past decade indicate that insufficient sun exposure may be responsible for 340,000 deaths in the United States and 480,000 deaths in Europe per year,
and an increased incidence of
breast cancer,
colorectal cancer,
hypertension,
cardiovascular disease,
metabolic syndrome,
multiple sclerosis,
Alzheimer’s disease,
autism,
asthma,
type 1 diabetes and
myopia.
Vitamin D has long been considered the principal mediator of beneficial effects of sun exposure. However, oral vitamin D supplementation has not been convincingly shown to prevent the above conditions; thus, serum 25(OH)D as an indicator of vitamin D status may be a proxy for and not a mediator of beneficial effects of sun exposure. New candidate mechanisms include the release of nitric oxide from the skin and direct effects of ultraviolet radiation (UVR) on peripheral blood cells. Collectively, this evidence indicates it would be wise for people living outside the tropics to ensure they expose their skin sufficiently to the sun. To minimize the harms of excessive sun exposure, great care must be taken to avoid sunburn, and sun exposure during high ambient UVR seasons should be obtained incrementally at not more than 5–30 min a day (depending on skin type and UV index), in season-appropriate clothing and with eyes closed or protected by sunglasses that filter UVR
Table of Contents
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Vitamin D Life
5-30 minutes a day is NOT enough (if you do not supplement or use a UV lamp
Suspect that they think that 800 IU is enough
Need at least 3,000 IU daily - even in the winter
Polish children need 45 minutes of noon sun to get 800 IU of Vitamin D – July 2020
1,000 IU of vitamin D from the sun not available in the winter (Switzerland too) – April 2019
Vitamin D needed for 12 ng in winter in Finland – Whites 320 IU, Blacks 720 IU – July 2018
Get enough Vitamin D from UK winter sun (if white skin and believe that 10 ng is enough) - Aug 2018
Vitamin D needed for 12 ng in winter in Finland – Whites 320 IU, Blacks 720 IU – July 2018
Vitamin D from safe sun: only 500 IU in 10 minutes when include windchill – Jan 2018
Note: about 3X more time in the sun is needed for seniors and those with dark skins
Items in both categories Noontime sun and Mortality:
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Noontime sun and D category starts with
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