• Ashelyn@lemmy.blahaj.zone
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      7 months ago

      I mean, there is the argument that if they bioaccumulate in the blood, it’s worth removing periodically even if it doesn’t stop new intake

      • FiniteBanjo@lemmy.today
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        7 months ago

        No because you’re making blood from nutrients with microplastics mixed in. That’s how it would hypothetically accumulate there in the first place. If it were being filtered out of the blood by another organ then I could see a case for scraping/removal but if it’s the blood then it’s coming directly from your food and drink and will be the same ratio even after bloodletting and/or regeneration.

        • emergencyfood@sh.itjust.works
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          7 months ago

          Let’s say you keep dripping slightly muddy water into a bucket. Over time, the mud will settle and accumulate in the bucket, while the clearer water will overflow. Now suppose you cut a slit at the base of the bucket. Now the mud will flow out through it and the water in the bucket will become less muddy, even though new muddy water is still dripping in. Here the bucket is your bloodstream, the slightly muddy water is your food, and the mud is microplastic.

          • FiniteBanjo@lemmy.today
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            7 months ago

            Blood doesn’t work like that, as it is constantly moving and being replaced. It is not a bucket.

            • emergencyfood@sh.itjust.works
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              7 months ago

              The problem is that things like microplastics cannot be removed easily. (This is called bioaccumulation.) But if you bleed and lose some blood, the new blood will take time to accumulate.

              • FiniteBanjo@lemmy.today
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                7 months ago

                If it flows out when the blood moves then it wouldn’t accumulate there in the first place. I’m not sure what you’re having difficulty with here.

                • emergencyfood@sh.itjust.works
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                  7 months ago

                  It doesn’t flow out when the blood moves, because the bloodstream is a closed loop (more or less). It can only flow out if you lose blood.

  • wrath_of_grunge@kbin.social
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    7 months ago

    i mean, as part of my job, i routinely take area hospitals medical grade leeches. it’s not like they ever stopped being used by doctors.

      • starman2112@sh.itjust.works
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        7 months ago

        Not OP, but apparently they’re useful for when you want a continuous, slow drain of blood. The ones they breed for hospitals don’t carry disease, so you can just kinda plonk it onto the spot that you want blood out of, and replace it when it gets full

      • Perfide@reddthat.com
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        7 months ago

        It’s less about the blood they suck out and more about their saliva. It’s a natural anticoagulant.

      • boogetyboo@aussie.zone
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        7 months ago

        Amputation sites I think? The suction attracts blood flow to the area and supports healing/retention of blood vessels… I think. Neither one of us clearly can be bothered googling but that’s what I recall…

      • MrShankles@reddthat.com
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        7 months ago

        For skin grafts after burns; the leeches’ saliva has anticoagulants that helps blood flow through the microvasculature (tiny blood vessels) of the area. This helps promote growth of new blood vessels, as well as improve the health of the current blood vessels in the area.

        TLDR: Helps tiny blood vessels in skin grafts (and other procedures), reduces failure of said skin grafts

        • Natanael@slrpnk.net
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          7 months ago

          If anybody’s wondering if there aren’t more modern medicines and treatments…

          Yes, but leeches are cheap and does the job just fine

  • slampisko@lemmy.world
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    7 months ago

    Makes me genuinely wonder… I’ve donated blood for like 15 times now – does that make my current blood less saturated with microplastics than if I hadn’t?

    • scoobford@lemmy.zip
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      7 months ago

      Probably not. Unless they build up in the body somewhere, the amount of microplastics in your blood is determined by how many you consume via inhaled dust, food, and drink compared with how many you flush put via urine and/or fecal material.

      If they do build up in the body somewhere, it probably isn’t the blood, because blood is already filtered regularly.

    • RaoulDook@lemmy.world
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      7 months ago

      I was thinking that a kidney dialysis machine might be able to filter out that stuff from your blood. I think the way those work is your blood goes out a tube into the machine and it filters it before sending it back to you. So you’d need filters in there that are fine enough to catch the microplastics.

      • Lojcs@lemm.ee
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        7 months ago

        I don’t think any filtering happens in dialysis, unwanted stuff just diffuses to another solution

        • TranscendentalEmpire@lemm.ee
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          7 months ago

          Correct. If there are actually micro plastics in your blood, the plastic is likely relatively small compared to a blood cell. Otherwise we would be witnessing a lot more issues with stroke/heart attacks. Any kind of filter small enough to filter out something that small would also filter out blood cells.

    • Noedel@lemmy.world
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      7 months ago

      I’ve read that’s true for PFAS… It depends on where the microplastics are stored by your body

  • Etterra@lemmy.world
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    7 months ago

    Microplastics are the only guaranteed source of your daily dose of Vitamin P, as recommended by nobody and discouraged by the FDA.

      • sugar_in_your_tea@sh.itjust.works
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        7 months ago

        I wonder if they actually filter the blood that people donate. I know they test it, but it would be cool if they filtered it as well for various crap.

        • Riven@lemmy.dbzer0.com
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          7 months ago

          Could they even filter microplastics without just getting rid of all of the red blood cells? If they were big enough to be filtered without catching blood cells we would probably be seeing way more people getting actively and catasteophically screwed by them.

          • sugar_in_your_tea@sh.itjust.works
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            7 months ago

            Here’s one source about the size of microplastics:

            The researchers couldn’t give a precise breakdown of the particle sizes due to the limitations of the testing methods. It’s safe to presume, however, that smaller particles closer to the 700 nanometer limit of the analysis would be easier for the body to take in than larger particles exceeding 100 micrometers.

            And red blood cells are 6.2–8.2μm. So I wonder if some kind of sieve could filter anything smaller than 5μm or so. Then again, there’s probably a bunch of other stuff in there as well, like white blood cells.

            It’s too bad that they’re in the same range as important things…

      • glitch1985@lemmy.world
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        7 months ago

        Yeah buts it’s fresh micro plastic and not this stall stuff I’ve had in me for years.

      • chicken@lemmy.dbzer0.com
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        7 months ago

        That should depend on how the chemicals accumulate though. If all the plastic ends up in your blood and never gets naturally filtered out, it could make sense. Maybe it builds up in your fat/muscles instead though, or gets filtered over time and the amount in your system is the same as the amount in what you have recently eaten, idk

      • Synnr@sopuli.xyz
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        7 months ago

        Somehow I don’t think they’d mind too much, provided you give them a nice leech habitat.

        Until Socraleech comes along and they force him to suck hemlock.

        • MxM111@kbin.social
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          7 months ago

          That’s a special type of cruelty when victim does not mind. Like when you give a drug addict tons of heroin.

    • emergencyfood@sh.itjust.works
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      7 months ago

      It isn’t. Blood donation reduces PFASs and iron buildup (too much iron in the blood is bad). And leeches are used in certain procedures, although I haven’t heard of them being used to remove microplastics (yet).

  • VirtualOdour@sh.itjust.works
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    7 months ago

    Microplastic might be good for us for all we know, in still going to avoid them but it’s something to think about we don’t have any real idea of what the effect of them is.

      • VirtualOdour@sh.itjust.works
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        7 months ago

        We have some very limited ideas from correlation and limited lab testing that allows us to say easy things like putting junk in vital veins is bad (the nature article) but that’s only a fraction of the types of microplastic and possible interactions - we know almost nothing about most of what’s happening.

        And to be clear I said they might be good for us as hyperbole, it’s of course possible but what’s far more likely is a myriad of long lasting health effects causing serious damage in obscure and complex ways.

        In a century they might be saying ‘those plastic brain gen alpha caused so many problems’ just as how it’s common to hear people talk about lead brain boomers… or maybe ‘wow crazy micro plastic gave us superpowers, that was lucky’