destrekor
Lifer
- Nov 18, 2005
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It seems the evolution that occurred a few thousand years ago that made humans keep producing lactase is most common in those of Northern European descent. I guess the whiter you are, the more likely you are able to drink milk.
That's precisely the case. Those of European Caucasian descent are far more likely to have the ability to process lactose well into adulthood. It can still be common though for those with such a gene to slowly lose the ability to tolerate lactose at anything above a small amount.
I think that gene is a mix of two things: European Caucasians have some Neanderthal DNA (up to 3% of the genome), and dairy farming dates back for eternity in the European region. In early times, keeping milk without spoiling was far easier than in other areas where man had settled early on, so that could have something to do with it.
I think the Neanderthal DNA has quite a bit to do with it. I can't recall where I read about it but I do think I remember seeing longer lactase production may have indeed come from the Neanderthal DNA contribution.
