Could colder weskin analyzer amwayather have anything to do with the development of lighter coloured skin?

Answer:
Maikang Low ultraviolet levels are the clincher.

Africans get mutations for skin colour as often as the Northern latitude people, it’s just that the very high UV levels select out even minor lightening mutations pretty swiftly.

European and East Asian light skin tones come from two different mutations, so our populations had split up already when those changes occurred. So European/Asian ancestors probably split from each other in a very sunny land. It’s why Europeans are ‘pink’ and Asians ‘golden’.

Mutations for light skin get selected into a population if the ultraviolet levels are low, as exposure sunlight is the main way humans acquire vitamin D. In cold climates most of the skin will be covered most of the year round, so there will be even more incentive for the skin to lighten up.

The only exception to the ‘light skin/low UV’ rule are the Eskimos. They eat so much vitamin D rich fish that skin lightening hasn’t been necessary.skin analyzer

Maikang Over time, the darker skin melanins were not selected as much by successive generations, as vitamin D needed to be more efficiently absorbed from sunlight, which became challenging, the further humans traveled from the Equator!

Also, folic acid didn’t need as much dark melanin in the skin, to protect women during childbirth, as they did, closer to the Equator!skin analyzer

Maikang White people are from Africa. They travelled from Africa to Europe, which is at a different position to the sun. This could have affected skin color. Also, the hotter climate could make humans evolve darker skin to overcome diseases such as cancer. Likewise, when an adaptation is no longer needed, it disappears (changing from black to white skin).

Anyway, this is what I heard once!skin analyzer

Maikang it was the exposure to the sun due to long treks trying to find new resources and settlements or something along those lines.skin analyzer

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