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A comment on Modern city dwellers have lost about half their gut microbes. Parent comment

Re:Modern city dwellers have lost about half their gut microbes by hprotagonist on Thursday June 30, 2022 @07:08PM (#31939866)
and west african; by two entirely separate mechanisms, which i’ve always found to be quite cool.
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Re:Modern city dwellers have lost about half their gut microbes by chimeracoder on Thursday June 30, 2022 @07:12PM (#31939904)
> and west african; by two entirely separate mechanisms, which i’ve always found to be quite cool.

What's the separate mechanism? I'm only aware of one set of genes coding for adult lactase production.

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Re:Modern city dwellers have lost about half their gut microbes by hprotagonist on Thursday June 30, 2022 @07:38PM (#31940159)
https://pubmed.ncbi.nlm.nih.gov/17159977/
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Re:Modern city dwellers have lost about half their gut microbes by flir on Thursday June 30, 2022 @08:54PM (#31940759)
I wonder if there's any advantage to inheriting both mechanisms.
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