I haven't delved deeply into the papers here. I'm not a doctor. But have seen in a few places that there is a correlation between latitude and all source mortal

I haven't delved deeply into the papers here. I'm not a doctor. But have seen in a few places that there is a correlation between latitude and all source mortality. Maybe it isn't just 'people that go outside tend to have a healthy lifestyle and that is why their mortality is lower'. A great Ted Talk on this (now a few years old) can be found here: https://www.ted.com/talks/richard_weller_could_the_sun_be_good_for_your_heart https://www.ted.com/talks/richard_weller_could_the_sun_be_go...