Indigenous tribes historically lived healthfully by spending all day outdoors, likely providing sufficient vitamin D.

“and there are plenty of tribes up you know I would surf at this place called Nia Bay and there oh I've been there yeah I think it's the maau tribe I think I'm getting that right and they you know there there are plenty of that live up there quite healthfully but they're outside all of the time really even in modern times oh well not so much now they have a meth they have a meth problem on the reservation now but yeah it's m it's horrible but they were living but historically I mean humans have lived all over the globe being outside all day now there's differences in terms of vitamin D and of course probably in the summer they're getting lots of vitamin D being in the sun in Seattle they're storing it in their fat and it gets them through the winter”