• bionicjoey@lemmy.ca
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    7 months ago

    I recall this question coming up on Reddit with some regularity (no pun intended). The typical answer I saw was something like “your rectum has a really strong immune system”

    • Pirky@lemmy.world
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      7 months ago

      That’s what I remember reading, too. I think that particular area gets its own lymph node system or something like that. Similar to how our head and neck have their own dedicated system.
      Those areas are prone to bacteria, so they get beefed up protections.

      • Contramuffin@lemmy.world
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        7 months ago

        Something kinda like that. They’re called Peyer’s Patches, and they’re like a base of operations for immune cells. They not only gather there, but they also scout out the bacteria present by reaching through the intestinal lining and pulling some of the stuff through.

        Also, a lot of bacteria in our guts aren’t really trying to get into our system. The intestinal epithelium produces mucus to prevent bacteria from getting close to the intestinal lining, and most bacteria are pretty chill with that

        • herrcaptain@lemmy.ca
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          7 months ago

          Damn, it’s gotta suck to be born an immune cell and get assigned to work out of the butthole for your short life.

          • Contramuffin@lemmy.world
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            7 months ago

            It suck to be an immune cell in general. Many disease-causing bacteria have evolved ways to subvert and kill immune cells in spectacular ways. And immune cells generally just have pretty short lifespans to begin with

  • snooggums@midwest.social
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    7 months ago

    That part of the body, like your mouth, has features that greatly reduce the chance of infection because they are the entry and exit points for foreign objects or waste. It is complicated how it all works, but in short your body really needs those parts to bot get infected, so it adapted ways to keep that from happening.

    That was the explanation I got from the doc when mine first showed up.

    Edit: All hail the rise of the butt bots!

  • ivanafterall@kbin.social
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    7 months ago

    Probably a lot of us do have infected buttholes, but just don’t realize it. It’s a silent but deadly epidemic.

  • Strayce@lemmy.sdf.org
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    7 months ago

    Fairly sure it’s because of the difference in environment. Gut bacteria tend to be anaerobic fermenting species, whereas the external part and blood are more aerobic. It’s been a while since i did physiology and microbio tho, someone correct me if I’m wrong.

  • atturaya@lemmygrad.ml
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    7 months ago

    kind of unrelated, but hemorrhoids are only common because something like 95% of people don’t eat the (already low) recommended amount of fiber. eat lots of fiber, people.

    • Comradesexual@lemmygrad.ml
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      7 months ago

      I am vegan with no shortage of fiber and get hemorrhoids regularly. IMO the diet argument is a lie. The true issue is the stress brought upon the working class through capitalism.

  • Snot Flickerman@lemmy.blahaj.zone
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    7 months ago

    Username checks out, it was the first word out of my mouth when I read this question.

    Good question though, looking forward to (hopefully) informed answers.