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The digestive system is supposed to be fully sandboxed from the host. Topologically it is as exoneous to your body as your skin and the sandboxing is necessary

The digestive system is supposed to be fully sandboxed from the host. Topologically it is as exoneous to your body as your skin and the sandboxing is necessary for your bacteria to not digest yourself. I would appreciate references on permeability mechanisms allowing for bacteria movement inside the body, on healthly humans. I mean there is a digestive system to human blood interface but I doubt it allow bacteria/archae/parasites/shrooms/atypical single celled eukaryotes to cross it. (little known but ~30% of your microbes are not bacteria but archae and withouth those we would not fart)

amalter 4y ago
I believe we're talking about.. em, the exit points. Natural birth is messy. Infants get covered in all sorts of slime, some of which occurs at "first light", right outside the body.
- rootusrootus 4y ago
  > Natural birth is messy That bears repeating. One of the grossest things I've ever witnessed (which wasn't something dead) was my son immediately after he was born. I was impressed.
tasty_freeze 4y ago
Did you read the comment you are responding to as saying bacterial travel through the intestinal wall, through the vagina, and into the fetus? It seems like it, but that isn't at all what op said. The bacterial transfer happens after the placenta has broken and the baby is being pushed out of the vagina. The vaginal opening and anus are inches away. The woman is bearing down to push out the baby and there can be discharges from the anus. Even if that doesn't happen, the area around the anus isn't entirely antiseptic.
- SemanticStrengh 4y ago
  of course contamination can happen once the baby it out of the mother body. I was refuting the intra-body contamination thesis. cf: > The organs are far from sterile, whole pathways are very close
  - vrc 4y ago
    That does not imply intra-body transfer, though. It’s exactly what it says. The digestive organs and the vaginal canal are not sterile, and their pathways converge at the bottom end. Seems pretty straightforward from the rest of the comment that, once the amniotic sac breaks it’s a bacterial slip all the way out, with a surprise at the end.

amalter 4y ago

I believe we're talking about.. em, the exit points. Natural birth is messy. Infants get covered in all sorts of slime, some of which occurs at "first light", right outside the body.

rootusrootus 4y ago
> Natural birth is messy That bears repeating. One of the grossest things I've ever witnessed (which wasn't something dead) was my son immediately after he was born. I was impressed.

tasty_freeze 4y ago

Did you read the comment you are responding to as saying bacterial travel through the intestinal wall, through the vagina, and into the fetus? It seems like it, but that isn't at all what op said. The bacterial transfer happens after the placenta has broken and the baby is being pushed out of the vagina. The vaginal opening and anus are inches away. The woman is bearing down to push out the baby and there can be discharges from the anus. Even if that doesn't happen, the area around the anus isn't entirely antiseptic.

SemanticStrengh 4y ago
of course contamination can happen once the baby it out of the mother body. I was refuting the intra-body contamination thesis. cf: > The organs are far from sterile, whole pathways are very close
- vrc 4y ago
  That does not imply intra-body transfer, though. It’s exactly what it says. The digestive organs and the vaginal canal are not sterile, and their pathways converge at the bottom end. Seems pretty straightforward from the rest of the comment that, once the amniotic sac breaks it’s a bacterial slip all the way out, with a surprise at the end.