What results? "People who go outside live longer"? "People who can afford to leave Sweden to go sunbathing live longer"? I agree with the point about single studies, but even if you have multiple studies they still have to be good studies that answer the actual question you had (which in this case is probably "should I wear a hat and sunscreen?").
No, I agree that touching grass is associated with being good for you, I just disagree that higher levels of UV exposure are what makes it good for you. Touching grass has been a confounding variable in every association study I've read which claims to be about sun exposure, and the phrase "sun exposure" is ambiguous enough that it's often misinterpreted as "UV exposure".
This is a glib and dismissive response that tells me nothing. It's about as helpful as "do your own research". Mate, I have done my own research, everything I can find is either a vague association study or has a tiny underpowered treatment group and reeks of publication bias.
If Google Scholar is providing you with papers (other than this one, which is about rich Swedish people/Swedish people who go outside more) that prove your hypothesis (which you haven't even stated, just hinted at) then you should either link to those papers or not reply.
I was just replying to the lazy untrue grandparent comment about this being a single study. I'm glad I don't need to do your research for you.
As for the discussion, there are multiple lines of evidence pointing to the fact that sunlight does in fact reduce mortality. First, this study controls for exercise, and also found that use of tanning beds reduces all cause mortality, so overall it's a pretty good study. We also know that vitamin D status is negatively correlated with mortality. We also know that nitric oxide reduces blood pressure, and is released from the skin by sunlight.
