[Hiddigeigei]

Aleutes? Inuits?

Lots of vitamin D in marine fish oils and probaly marine-mammal blubber.These people live off the sea.

[muawiyah]

Note, living North of the 30th you really do have to eat a lot of fish ~ for one thing, cows can't live there.

At the same time your average human population that lives South of the 30th has an hereditary fish allergy 48% of the time.

Still, the amount of vitamin D you are going to get is less than you will need. It pays to have translucent skin, even if it tans in the Summer.