alt Hacker NewsThousands of words and no mention of the obvious thing - testing whether sun exposure is beneficial or harmful.
The article opens with the observation that southern states had lower cancer rates due to solar irradiance. But then we intervene by taking pills. Why not try to absorb through the skin, even if it means something like a tanning bed?
Yep, it's sunlight.
Nobody will run that trial though because we've spent decades telling people the sun is dangerous and gives you cancer (both things can be true of course). Putting people in the sun every day would not pass ethics tests.
Also you cannot sell sunlight.