[LMB] OT: Genetics & Culture
baur at chello.at
Fri Nov 17 05:29:51 GMT 2017
humans are not the only ones who lost the ability to synthesize vitamin C -
guinea pigs for example are another species this happend to
and since many apes also have the same problem with vitamin C as humans, this
must have happened pretty early in the evolution to h. sap.
> Matthew George <matt.msg at gmail.com> hat am 17. November 2017 um 00:22
> No, the reason humans need dietary vitamin C is that for some unknown
> reason our distant ancestors lost the enzymatic pathway to synthesize it.
> Other mammals can make it - indeed, one reason Native Americans in the far
> north didn't get scurvy is that they ate certain organs, or all their
> raw. I vaguely recall one ethnologist discussing how after hunting a moose
> and butchering it for cooking and preservation, (I think) the adrenal
> glands were carefully cubed and distributed raw to everyone in the tribe.
> We survived despite losing the ability to make this essential nutrient
> because our early diets were rich in it. But as far as anyone can
> determine, there's no benefit to having lost it. Unlike the caecum or the
> vomeronasal organ, say. (We technically still have a vestigal,
> nonfunctional version of both.)
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