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Science

Microplastics Are Infiltrating Brain Tissue, Studies Show (theguardian.com) 118

A growing body of scientific evidence shows that microplastics are accumulating in critical human organs, including the brain, leading researchers to call for more urgent actions to rein in plastic pollution. From a report: Studies have detected tiny shards and specks of plastics in human lungs, placentas, reproductive organs, livers, kidneys, knee and elbow joints, blood vessels and bone marrow. Given the research findings, "it is now imperative to declare a global emergency" to deal with plastic pollution, said Sedat Gundogdu, who studies microplastics at Cukurova University in Turkey. Humans are exposed to microplastics -- defined as fragments smaller than 5mm in diameter -- and the chemicals used to make plastics from widespread plastic pollution in air, water and even food.

The health hazards of microplastics within the human body are not yet well-known. Recent studies are just beginning to suggest they could increase the risk of various conditions such as oxidative stress, which can lead to cell damage and inflammation, as well as cardiovascular disease. Animal studies have also linked microplastics to fertility issues, various cancers, a disrupted endocrine and immune system, and impaired learning and memory.

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Microplastics Are Infiltrating Brain Tissue, Studies Show

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  • Blister packs are so convenient for businesses, and rich people can afford the microplastic filtering systems being developed, so they'll be fine!

    • Blister packs are so convenient for businesses, and rich people can afford the microplastic filtering systems being developed, so they'll be fine!

      Be fine? As if some rich person is going to find any premium sushi plastic free within a decade, no matter how much they pay.

      Lead poisoning is sooo 20th Centuy. The new hot sick, is plastic. What’s the same, is the ignorance.

      • by gweihir ( 88907 )

        What’s the same, is the ignorance.

        Yep. The one thing you can always depend on with humans in large enough groups.

    • Concern != Emergency (Score:5, Informative)

      by Roger W Moore ( 538166 ) on Wednesday August 21, 2024 @03:44PM (#64724914) Journal
      Why would they bother? Rich people don't usually spend lots of money on everything anyone is concerned about because that's a good way to stop being rich. While this is certainly concerning why is it necessarily a "global emergency"? For a start how long has this been going on for i.e. is this something that we are or have already seen the health effects of because we've been exposed to them for several decades?

      This may be a new and definitely concerning discovery, but the article itself states, "the health hazards of microplastics within the human body are not yet well-known" then followed by lots of suspicion that they are bad but only suspicion. Given that, perhaps we'd better find out whether they do pose a serious health hazard before we panic and start calling it an emergency? This will also help us to determine how much effort we need to put in to preventing these microplastics.

      Also, if you are going to call them "micro" plastics then perhaps the size definition should be tightened up a little since 5 mm is 5,000 "micro" metres, and I hope at least an order or two of magnitude larger than any piece they found in a brain, otherwise rather than pollution as the cause I suspect they were hit in the head by something large and plastic!
      • Declaring an emergency typically gives a government special emergency powers. Now, we can live in a constant state of emergency.
  • And it's probably making everyone fat, too.

    • by Mordain ( 204988 )

      Sure, it revolutionized how we can store food in many forms, leading to higher levels of food engineered for shelf stability and portability, but at the same time making it worse for us (calories and content) and overall far too available to the point it encourages overeating.

  • by Tablizer ( 95088 ) on Wednesday August 21, 2024 @02:31PM (#64724640) Journal

    It's okay, my brain-worm is gobbling it up.

  • So is organ harvesting the future of plastic recycling? Can I at least hope for some good SF or horror about that?
  • Sure, gluing my hand to the Mona Lisa may not be the most logical way to register my displeasure with pervasive plastic pollution. But I'm out of ideas. Actually, I think there might be plastic where most of my ideas used to be.
  • Synthetic clothes (Score:4, Interesting)

    by ISayWeOnlyToBePolite ( 721679 ) on Wednesday August 21, 2024 @02:46PM (#64724702)

    I wonder how much synthetic garments contribute? Living in a cold country, fleece in particular would be very hard to cost effectively replace. Would a water filter solution be viable if needed?

    • Re:Synthetic clothes (Score:5, Interesting)

      by Waffle Iron ( 339739 ) on Wednesday August 21, 2024 @02:58PM (#64724748)

      I wonder how much synthetic garments contribute?

      I recently got one of those UV flashlights for spotting urine from pets or vermin. I was surprised to find that all of the dusty surfaces in my house glowed brightly.

      I guessed that it was because a large proportion of the dust is lint from clothing, and it glows because laundry detergents have UV brighteners. A quick internet search confirmed my theory.

      Although we have a lot of 100% cotton clothes, there are plenty of synthetic blends and some 100% synthetic items, so a good proportion of this dust is microplastics. Looking at all the glowing residue highlights just how much plastic everyone is inhaling or ingesting every day.

    • I read long ago that the biggest source for the really tiny plastic was clothing. It makes sense enough and I don't know why we only call microplastic 5mm when the stuff found inside living cells is way smaller and NEW clothing itself is under 0.5 mm.

      So can we call these nanoplastics? it's not like we are following SI prefixes with microplastics...

      • A quick search and nanoplastics is a thing and in many cases probably the correct term when microplastics is used. I'm not so sure it's worth the effort to distinguish between the two in casual conversation, but you are right.

      • Microplastics are all plastic fragments smaller than 5mm. So, the stuff you're describing are microplastics too.

        • The prefix micro does have scientific meaning which does not cover >= 1mm which is milli-meters not micro-meters which are 1000 times smaller.

          HUGE difference between 5 mm and 0.1 mm; I can feel stepping on a 5mm pebble. 0.1 can be inhaled into my lungs. A dust mite is 0.2mm; can hardly see it at all. 0.025mm (25 nanometer) goes from lungs directly into the blood stream.

          They are finding plastic not just in blood but inside the cells themselves.

          Would be useful to use proper terms so I know my air filter c

          • Yeah, I understand what you're saying and also feel the same as you about the prefix use.

            But 'micro' comes from the Greek 'mykros' which means simply 'small' and sometimes people use it loosely, like in 'microtransactions'.

    • Re:Synthetic clothes (Score:4, Informative)

      by JaredOfEuropa ( 526365 ) on Wednesday August 21, 2024 @03:02PM (#64724770) Journal
      Short answer: yes, some water filters can take care of most of microplastics. You can run one on your tap, and according to our local water companies, it is possible to filter it out of our drinking water at the purification plant. A few plants already have such filters. The bad news is: water is not the only source of this stuff, it can also enter the body through the food we eat.

      I wonder how much this stuff actually affects us. It's been around for several generations, and you'd think some health effects would have manifested by now. Declining fertility could be one of them, but I'm not aware of other aspects of health that have deteriorated in the past 80 years or so.
      • I was thinking not only water in but wastewater, there must be huge amounts from washing machines. Yes, the lack of large specific observable harm is the one comforting thought I have on this, I'm just not convinced it will stay that way.

        • Here's an article [mdpi.com] that talks about microplastics being removed from waste water during treatment. And, here's an article [cornell.edu] that talks about an enzyme being engineered to destroy the microplastics. Because microplastics are mixed with other waste in wastewater, I think filtration to remove them might only be beneficial after the other waste is removed by current wastewater treatment methods. Then, as the microplastics are mixed with everything else removed from the wastewater, you might need to enzymatically
      • Re:Synthetic clothes (Score:5, Interesting)

        by fjo3 ( 1399739 ) on Wednesday August 21, 2024 @03:42PM (#64724910)
        There has been a huge uptick in people getting cancer at a younger age. I was diagnosed with brain cancer at the age of 39, with no family history. I can not prove it, but I am 100% blaming microplastics.
        • I can not prove it, but I am 100% blaming microplastics.

          That's just the brain cancer talking. How do you know it's microplastics, rather than say PFAS, air pollution, or the many other things that cause problems?

          I'm not saying it's *not* microplastics, I'm saying use what is left of your brain to think instead of passing judgement.

      • Re:Synthetic clothes (Score:5, Interesting)

        by thegreatemu ( 1457577 ) on Wednesday August 21, 2024 @04:00PM (#64724970)
        One terrifying change that for some reason is not really covered at all in the media: children are starting puberty younger, especially girls. In and of itself it doesn't appear to be a harmful change, but the fact that such a fundamental part of human biology is changing and NOBODY KNOWS WHY is really scary.
        • Better nutrition, perhaps more caloric food would be the main suspect - it's been known to be one of the main factors in the onset of puberty. But who knows what other factors are there, human body is a crazy complicated system where things can be linked in most unexpected ways

        • One terrifying change that for some reason is not really covered at all in the media: children are starting puberty younger, especially girls.

          I don't know what planet you are on, but this has been discussed endlessly. It is because of hormones being used in meat production.

          • And milk production. And that's been discussed around the part of the country I live in for at least the last 35 years, because girls develop very early here.

          • I don't know what planet you are on, but this has been discussed endlessly. It is because of hormones being used in meat production.

            I'm afraid there are some inconvenient facts with that theory, not least of which is that it fails to explain why the trend began over a century before those hormones saw widespread use [nih.gov].

            The average age for menarche (a girl's first menstruation) has been declining by about 4 months every decade since at least the mid-1800s. That global trend remains the case today, with better nutrition and the rise in childhood obesity being the leading theories. Given that we didn't have the technology to manufacture rBST/

      • Re:Synthetic clothes (Score:5, Interesting)

        by DarkOx ( 621550 ) on Wednesday August 21, 2024 @04:06PM (#64724986) Journal

        I wonder how much this stuff actually affects us. It's been around for several generations, and you'd think some health effects would have manifested by now. Declining fertility could be one of them, but I'm not aware of other aspects of health that have deteriorated in the past 80 years or so.

        It hasnt really be that long though. Bakelite and stuff have been around for several generations, but as far as most modern plastics go the boomers were teenagers before they really encountered them in everyday life, and even then they were not in a world completely with plastic waste that breaks down into micro plastics until some time much later. Later Xers and possibly even the earlier millennials were probably first people who grew up in a plastic world from the start. Lots of things are harmful to immature organisms that have little impact on adults. We are only now seeing now the health of these groups in later life.

      • Hormone disruption? Birth rates falling?
        • by hendric ( 30596 )

          Metabolic syndrome?
          Type 2 diabetes?
          Sperm counts in men?
          Overall fertility?

          Seems like the labcoats need to gather up some mice and see what happens when you feed half a microplastics-free American diet.

      • and you'd think some health effects would have manifested by now.

        Every time someone does a trend analysis half of the internet shouts back angrily "CORRELAITON IS NOT CAUSATION" while frothing angrily at the mouth. Proving causation is hard when the mechanisms by which something may affect something else are not known. We have a lot of health effects in general among populations that currently are not tagged to any specific cause.

        Right now there's many toxicological studies underway, some of them even showing evidence of metabolic disorder (which is funny because you'll

    • I remember reading an article from perhaps five to ten years ago, in which it was reported that they had found microplastics even in bodies of water in the most remote parts of Yellowstone National Park. Their theory, I think, was that it had come in as precipitation. I think that was polyester.
      • Sounds right (obviously it's wrong, but you get what I'm saying). Polyester is a common plastic (PET bottles etc) and in garments like fleece, the latter I believe goes out with the water from washing in huge amounts.

    • People practically live in fleece around here and each wash (or even wear) presumably contributes millions of particles into the environment. I feel the same way about the roads made with recycled tyres, they must be contributing tonnes of crap into watercourses. The problem is that humanity is so vast that everything has some unintended consequence that negatively impacts the planet, or each other
      • Don't know much about tyres other then a couple of years ago at least, I was talking to a someone who did street racing and they imported tyres from the US as here in the EU there was much stricter regulations as to what oils are used to produce them making them more expensive even if shipping those massive tyres wasn't cheap.

    • Just get you a buffalo coat. Or a sheepskin with the wool on it. Yes, fleece in particular are good insulators because of the tiny fibers of extruded plastic they're made up of. Also, that's why they're soft. Real sheepskin jackets cost a fortune, but they're really warm. Of course, unlike fleece you cannot machine wash them.

      • That's the thing, it's just so cheap and convenient in comparison. Merino wool would replace most items for me, but that's also hand wash. Jacket I'd probably go for down. For shoes I don't think there's a realistic alternative but leather and socks. Just replacing what I have and actually use would be in the $1000s, have me hand wash and looking at the whole do jack shit.

    • by klui ( 457783 )

      You just need to go out and hunt and wear polar bear skin or something like that. I saw a program a long time ago about some folks visiting indigenous tribes in the Arctic. The visitors said they were not comfortable wearing synthetics but the natives were fine who wore animal skin. Maybe they're just used to the environment?

  • iron age, bronze age, silver age, gold age, and now for us, the plastic age
    • iron age,
      bronze age,
      silver age,
      gold age,
      and now for us, the plastic age

      Ahhh, the plastic age. One comedian's answer to one of our oldest questions:

      "The planet will be here for a long, long, LONG time after we’re gone, and it will heal itself, it will cleanse itself, ’cause that’s what it does. It’s a self-correcting system. The air and the water will recover, the earth will be renewed. And if it’s true that plastic is not degradable, well, the planet will simply incorporate plastic into a new paradigm: the earth plus plastic. The earth doesn

    • We are in the oil age. See, most plastics are made with oil...

      ok the nitpickers will say fossil fuel since it's mostly natural gas.
  • by Notabadguy ( 961343 ) on Wednesday August 21, 2024 @02:53PM (#64724732)

    Over the centuries of discourse about the possible likely cause of the end of the human species....we've focused on war, plague, asteroid impacts, the Second Coming, acid raid, global starvation, water wars, nuclear holocaust, fission gone wild, our solar system's sun ...

    How completely anticlimactic would it be if we just ... fizzle out due to global plastic contamination.

    • "Second Coming" I'm still kicking myself just a little bit for holding on to my morals and not loading up on all of the loot I could've acquired during 2011's "rapture" when people could let their stuff go because they wouldn't be needing it anymore.
    • this is the real grey goo theory

  • Look this stuff is not meant to be in humans. End of story
    • Food industry is only part of the problem. Vinyl siding, vinyl windows, insulation, most of your car are all plastics.

      After replacing a water heater I wanted to keep the old tank and upcycle it into a planter or something, holy crap that spray foam they use gets everywhere - I probably breathed more of that in than any other plastic in the past decade. Thanks to static electricity the stuff just sticks to everything.
  • ...but mainly why people are less and less able to think realistically. Like, maybe plastic tricks the brain into thinking that opinions are facts.

    • Are they, though? I can see why it appears so; in the past, the opinions that reached us were limited to what got past the filters of the mainstream media, and from whomever happened to be within earshot. Nowadays we can read every dumb uninformed opinion from almost anyone in the world, pretty much unfiltered. But I'm not convinced that the average person is less capable of logical thinking, for whatever reason.
      • Strong agree. I think popularising these nonsensical conspiracy theories that many now choose as their hill to die on has merely exposed how dumb many of us are & always have been, including on /.
  • by Cowardly Lurker ( 2540102 ) on Wednesday August 21, 2024 @03:16PM (#64724816)

    Humans are exposed to microplastics – defined as fragments smaller than 5mm in diameter...

    So.. perhaps milliplastics is a better term? Or better yet, why not define a more appropriate size threshold? /S ffs

    Besides, a ~5mm chunk (bullet) of plastic lodged in brain tissue is likely fatal. A minor amount of severe apple=jump type brain damage at the very least.

    • You'd be surprised at how much stuff can happily stay inside people's skulls without being too problematic. But yeah, we're actually talking about microplastics, i.e. microscopic fragments that can find their way into the bloodstream & therefore the brain... & testicles. Don't forget to tell our elected representatives that their testicles are being poisoned by the plastics companies too. I'm sure that'll motivate them.
    • Besides, a ~5mm chunk (bullet) of plastic lodged in brain tissue is likely fatal.

      Why would it be fatal? I work with a person who had 1/4 of his brain removed in an accident. Aside from motor skill issues he's actually an excellent engineer. Doctors regularly find big objects in people's brain.

    • I'm thinking nanoplastics is a better term. How are they defining "microplastics"? It seems that they are finding them inside everything, including rocks millions of years old, on Mars, in my spaghetti, and in the orange on my desk. If that's true then they are probably a natural occurrence and have nothing to do with modern plastics.

  • ...using tires and synthetic textiles.
    There: basically 2/3 of micro plastics removed from the stream.

  • Most of these studies are coming out of China, which is rampant with cheating and data fabrication. I want to see some replication out of wester before proceeding to eliminate all plastics. https://www.economist.com/chin... [economist.com]
    • Why? Do you think North America is somehow different from China and the effects of plastic? Considering all the plastic bottles and bags I see lying along the side of the road, any potential differences would be insignificant.

  • by fjo3 ( 1399739 ) on Wednesday August 21, 2024 @03:40PM (#64724906)
  • ... the testicles story, e.g. https://www.npr.org/sections/h... [npr.org] I reckon our elected representatives will be more swayed by thinking about their gonads getting poisoned than their brains. You know, the ones who think with their...
  • Plastic particles in brains and reproductive organs is NOT how I anticipated the origin story of DC's Plastic Man to go...
  • by toxonix ( 1793960 ) on Wednesday August 21, 2024 @04:59PM (#64725136)

    Synthetic fabrics are constantly shedding microplastics according to the internet. So those super-soft pseudo-fur fleece and other micro-extruded polyester products need to stop doing that. I'm a sailor, so I have microplastics shedding from huge Dacron (polyester) sails and all the sheets and halyards (ultra-high-molecular-weight woven polyethylene with woven polyester jackets), plus from the (polyester resin infused) glass fiber boat decks and hulls and (polyester) gel-coated surfaces.
    Probably 90% of us are wearing some synthetic clothing, whether it be a blend or full synthetic made from dinosaur hydrocarbons or recycled PET bottles.
    If I make a plant-based plastic, say out of epoxidized linseed oil, does that product then accumulate in the environment and cause problems?

  • I use my bitcoin hoard to remain free of all plastics.

  • ... that there are bits of just about anything super small, in the environment, in our tissues.

    The important question is whether any given substance, in the concentration it's actually found in, is actually dangerous enough to be worried about. And that's the part where they start mumbling and hand waving/.

  • Humans are exposed to microplastics -- defined as fragments smaller than 5mm in diameter

    OK, unless it's too early in the morning, that's half a centimetre.
    That's a big chunk! One like that would cause real problems.

    These are 'milliplastics', actually.

    Or maybe the reporter was a doofus, and meant 'less than five micrometres'.
    Or American.

God helps them that themselves. -- Benjamin Franklin, "Poor Richard's Almanac"

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