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| Re: It Is Now Passover (1430114) | |||
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Re: It Is Now Passover |
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Posted by Nilet on Wed Apr 12 20:02:37 2017, in response to Re: It Is Now Passover, posted by AlM on Wed Apr 12 15:38:49 2017. Human milk contains lactose. Wouldn't lactose tolerance always have been prevalent from the time that mammals evolved?In infancy, yes. All infant mammals are lactose tolerant but stop producing lactase enzyme shortly after weaning. Some humans have a mutation called lactase persistence that allows them to remain lactose tolerant into adulthood, but this is by no means the default condition for humans and incredibly rare among mammals as a whole. When Spider-Pig says lactose intolerance is the default condition, he means lactose intolerance after weaning. |
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