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Over 50% of people are lactose intolerant, and assuming the current timeline for agriculture is correct evolution doesn’t work that fast.
by throwawaycities 5y ago
Over 50% of people are lactose intolerant, and assuming the current timeline for agriculture is correct evolution doesn’t work that fast.
- imtringued 5y agoI'm not going to pretend to be an expert but lactose intolerance depends on gut microbes which doesn't require evolution to change. You can alleviate symptoms of lactose intolerance with probiotics/kefir.
- throwawaycities 5y ago> lactose intolerance depends on gut microbes which doesn't require evolution to change. I was responding to a comment that expressly said we evolved to consume milk after domesticating cows.
- twobitshifter 5y agoFrom what I’ve read the evolution of adult lactase was almost instant. Humans naturally produce lactase as babies, but what had to happen was to extend that production into adulthood. This is really a straightforward mutation then, what had changed was the non silencing of the gene that is already active at birth.