Interesting, thanks. When I made that statement I thought to myself the only other reason that makes sense would be if pigmentation was somehow expensive, which

Interesting, thanks. When I made that statement I thought to myself the only other reason that makes sense would be if pigmentation was somehow expensive, which is what the article concludes if I understand correctly - "a pigmented skin barrier, which is metabolically expensive to produce, became less important" As for the latter comment, I've read numerous times that black adults in the US have lower vitamin d levels. I guess back to the GP's point, is there proof that is a detrimental thing?