[burger]

If you've been getting a lot of sun, probably should skip the D supplement  (unless doc says otherwise).

I was going to say, isn't it the case that some time outside is plenty for people with light skin? I thought I read half an hour a day was plenty but that's a hazy memory.

I think it's even less.  But...if you live north of central CA or so, in winter the sun is not strong enough to make Vitamin D.  The UV index has to be >3, according to this site: http://blogs.oregonstate.edu/linuspaulin...-d-winter/

So, if you're anywhere outside the southern tier of the US, as in this map, you may not be getting enough D from the sun alone in winter.

[burger]

If you've been getting a lot of sun, probably should skip the D supplement  (unless doc says otherwise).

I was going to say, isn't it the case that some time outside is plenty for people with light skin? I thought I read half an hour a day was plenty but that's a hazy memory.

I think it's even less.  But...if you live north of central CA or so, in winter the sun is not strong enough to make Vitamin D.  The UV index has to be >3, according to this site: http://blogs.oregonstate.edu/linuspaulin...-d-winter/

So, if you're anywhere outside the southern tier of the US, as in this map, you may not be getting enough D from the sun alone in winter.