5 ms·
In winter, in the more northerly latitudes, being outside is not sufficient, because of the angle at which the sun ray hit, the skin cannot make vitamin D.
by dorfsmay 6y ago
In winter, in the more northerly latitudes, being outside is not sufficient, because of the angle at which the sun ray hit, the skin cannot make vitamin D.
- andi999 6y agoWhat is the correct angle?
- bluthru 6y agoYeah that's a good point. Going outside when the sun is high would probably allow that person to not resort to shorts.
- stordoff 6y agoFor instance in the UK: > At latitudes below 37ᵒN, UVB radiation is sufficient for year round vitamin D synthesis. At higher latitude, vitamin D is not synthesised during the winter months. In the UK, sunlight-induced vitamin D synthesis is only effective between late March/early April and September and not from October onwards throughout the winter months. https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/537616/SACN_Vitamin_D_and_Health_report.pdf https://assets.publishing.service.gov.uk/government/uploads/...
- w14 6y agoIndeed, and so the UK Gov has decided to give free vitamin D suppliments to risk groups this winter. https://www.gov.uk/government/news/at-risk-groups-to-receive-free-winter-supply-of-vitamin-d https://www.gov.uk/government/news/at-risk-groups-to-receive...
- nucleardog 6y agoNot to mention at many of the places I’ve lived at high latitudes going outside for a half hour in shorts is likely to result in severe frostbite in the winter. It was a very regular occurrence to hear the warnings on the news in the morning that it was cold enough to get frostbite on exposed skin in under a minute...