I have a friend who thinks nothing of spending all weekend indoors. Goes to work during week so travel time outdoors Mon -Fri is probably 1.5 hrs a day - though most of this is on a bus. Am worried about his vit D levels. Anyone know how much he d need and what are the consequences of not getting enough on a daily basis?
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General health
How much daylight does an adult male need each day?
3 replies
lottie63 · 28/03/2013 06:54
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