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Interesting, in Canada we're told that the angle made by the sun in winter in places at "high" latitudes (> 50) prevents us from getting the right kind of light
by dorfsmay 11y ago
Interesting, in Canada we're told that the angle made by the sun in winter in places at "high" latitudes (> 50) prevents us from getting the right kind of light/UV in the winter, and to compensate by taking daily supplements of vitamin D.
- sliverstorm 11y agoYou just need more sunlight. At tropical latitudes you get enough D in five minutes with only your face exposed. At northern latitudes it just takes longer, or you can expose more skin.
- dorfsmay 11y agoExposing more skin in winter at high latitudes isn't easy nor safe!
- jensen123 11y agoIf the sun is very low in the sky, no UVB radiation will reach you. The body needs the UVB radiation in order to produce vitamin D. I think a general rule of thumb is that if your shadow is longer than you are, then there is no UVB.