No, because they were never farmers, but remained primaryily hunters. Lots of vit D in animal flesh. ( According to the theory)
I remember seeing a food channel episode a while beack where the host ate a seal with an Inuit family. One delicacy- the eyeballs- incredibly rich in vit D.
So if my family starts eating seal eyeballs now, in 5,500 years my descendants will have nice tans? LOL!
Those big brown puppy eyes! Yum.