I find it odd that Examine.com[0] hasn't been mentioned yet. There have been studies of vitamin D supplementation; these have been specifically about supplemen

I find it odd that Examine.com[0] hasn't been mentioned yet. There have been studies of vitamin D supplementation; these have been specifically about supplementation and not just correlation with blood levels of vitamin D. I'm sure that sun exposure has additional effects past vitamin D production given how messy biology is, but it's not clear to me that unprotected sun exposure is the best way to get those additional effects. For example, if blocking UVA and letting in some amount of UVB gets the benefits of both sunscreen and sun exposure, then I'm all for it. However, it doesn't seem like we have enough information to make an informed decision yet. [0] https://examine.com/supplements/vitamin-d/ https://examine.com/supplements/vitamin-d/