>In diseased tissue samples of people with chronic illnesses (IBD [6], Dementia [7], heart disease [8]), microplastic prevalence is significantly higher than healthy tissue.
this is very much not the same thing as "microplastics cause chronic illness", even though it's worded in a way that clearly wants to make you think that.
It's saying that there could be a link and a link has been found on mice. That and the fact that the human body is not supposed to be running partially on plastic should trigger some actions.
it took me a minute to parse that sentence also. They are saying that health tissue makes up < 100% of the body, but that microplastics can be found in a full 100% of the body (healthy and non-healthy). Therefore microplastic prevalence > healthy tissue. It's saying that there is no part of the body that isn't impacted
We’ve seen it with lead, asbestos, and PFAS — decades of denial, then belated regulation, then generations living with the consequences. The only difference is timing —and whether you wait for policy to catch up or act on what the science already shows. Think it’s time to push for more studies on the health consequences of microplastics
Any thoughts on the temperature of plastics? Looks like a takeout container at 95C (soup, for example) can release 50% more particles than at 50C [1], but how much of overall ingestion comes from this source? Several friends of mine avoid takeout for this reason, is that rational?
I've been having a good time chatting with Deep Research LLMs about this. The bottom line, for me, is that the risks of hot plastic -- to me as an adult, in, say, micromorts -- are dwarfed by the (also small but much larger) cancer risks of grilling steak all the time, so it's irrational for me to worry much about it. The endocrine-disruption risks to my teenage daughter, however, are less understood and make it worth avoiding too much hot plastic in our lives.
I have often wondered why the government doesn't do anything about this. Is the science not clear enough yet?
Quick search shows that we knew about lead hazards as early as the 1920s/1930s, but it took until the 1970s to get regulation about lead paint and gas - hoping we don't repeat that in this case
The science is very clear on microplastics existing and being in our bodies.
The science linking that to specific outcomes/harm is almost non existent from what I understand.
Edit: to those downvoting - I'm not downplaying anything here, I agree they're concerning and we should be worried - just stating the fact that as far as I know the research on outcomes is very inconclusive at this point.
If the current US government started doing anything about it right now, i would immediately regard it as 100% horseshit. America won't be in any position to lead ... anything scientific, medical or even thoughtful for a generation or two, at least.
I know there are still people hanging on in their fields trying to do the right things, but the bullshit engine in DC is so strong now that nothing is believable. If you are working in scientific research in America today, your only career goal needs to be emigration.
All microplastics out in the open will degrade to nanoplastics at some point, and those find it much easier to infiltrate the human body. They penetrate the blood-brain barrier.
This leads me to believe that it's literally impossible to avoid. The air/water supply must be getting more poluted by the minute with these things
Many of these microplastic studies [1-9] rely on small sample sizes (e.g., n=10 for brain tissue) and detection methods that could pick up contamination from lab equipment itself. It reminds me of when everyone was afraid of BPA
And what defines a “microplastic”? There’s so many different types of plastics that all have different effects on the body
What’s really the health trade-off compared to having to monitor every tiny little thing
>And what defines a “microplastic”? There’s so many different types of plastics that all have different effects on the body
It's not that hard to constrain it to synthetic organic polymers (aka plastics) that are small enough (smaller than 5.0 mm).
Even if there are some exceptions also considered plastics, this already covers 99% of the ones to worry about.
And the effects we worry about are from the presense of millions of hard synthetic micromaterials like that in the bloodstream, organs, and even the brain.
That's enough of a concern for the whole class, before we start to care about them "all having different effects on the body" (which is barely a given).
> What’s really the health trade-off compared to having to monitor every tiny little thing
I'd say that there's sure a health benefit for continuing studies on microplastics. Even if they're difficult to conduct, it's probably a good idea to learn more aboht microplastics and health because, barring some new way to remove microplastics, it seems likely that the ambient concentration of them will only increase in the future.
I have mixed feelings about this. On the one hand, I think microplastics, and the chemicals that leach from them, plasticizers, are incredibly serious issues. In fact, my company, NeutraOat (neutraoat.com), is creating a modified oat fiber supplement to trap plasticizers in the gut and remove them from the bloodstream.
On the other hand, as other commenters mention, a lot of the studies on microplastics are sloppily done and the conclusions are overreaching. These toxicology studies are certainly not up to the standard of the safety studies that are run on pharmaceuticals. The question is if they need to be in order for us to take action on microplastics. Personally, I think the risk/reward ratio is now clearly in favor of taking action on microplastics, even if I have some problems with the studies and I'm not as confident as the OP.
notatoad|3 months ago
this is very much not the same thing as "microplastics cause chronic illness", even though it's worded in a way that clearly wants to make you think that.
pohl|3 months ago
boudin|3 months ago
quirkot|3 months ago
pashmini|3 months ago
tigershen23|3 months ago
[1] https://pubs.rsc.org/en/content/articlehtml/2025/an/d4an0137...
pinko|3 months ago
ibbih|3 months ago
55x for BPA? It's pretty annoying how wide an umbrella term microplastics are.
cmuguythrow|3 months ago
Quick search shows that we knew about lead hazards as early as the 1920s/1930s, but it took until the 1970s to get regulation about lead paint and gas - hoping we don't repeat that in this case
raincole|3 months ago
No.
https://www.nature.com/articles/d41586-025-00405-8
(https://web.archive.org/web/20250211144614/https://www.natur... if you need)
https://pubmed.ncbi.nlm.nih.gov/39900298/
goelbab|3 months ago
There’s also no clear definition of microplastics that I’ve seen. Different plastics have different toxicitiy
pohl|3 months ago
113|3 months ago
p1necone|3 months ago
The science linking that to specific outcomes/harm is almost non existent from what I understand.
Edit: to those downvoting - I'm not downplaying anything here, I agree they're concerning and we should be worried - just stating the fact that as far as I know the research on outcomes is very inconclusive at this point.
rose-knuckle17|3 months ago
I know there are still people hanging on in their fields trying to do the right things, but the bullshit engine in DC is so strong now that nothing is believable. If you are working in scientific research in America today, your only career goal needs to be emigration.
nullorempty|3 months ago
Government is always on your side!
seethishat|3 months ago
There is no avoiding it. We are all surrounded by plastics in the air, water, soil, etc.
magarnicle|3 months ago
enether|3 months ago
All microplastics out in the open will degrade to nanoplastics at some point, and those find it much easier to infiltrate the human body. They penetrate the blood-brain barrier.
This leads me to believe that it's literally impossible to avoid. The air/water supply must be getting more poluted by the minute with these things
HPsquared|3 months ago
goelbab|3 months ago
And what defines a “microplastic”? There’s so many different types of plastics that all have different effects on the body
What’s really the health trade-off compared to having to monitor every tiny little thing
coldtea|3 months ago
That's still the case.
>And what defines a “microplastic”? There’s so many different types of plastics that all have different effects on the body
It's not that hard to constrain it to synthetic organic polymers (aka plastics) that are small enough (smaller than 5.0 mm).
Even if there are some exceptions also considered plastics, this already covers 99% of the ones to worry about.
And the effects we worry about are from the presense of millions of hard synthetic micromaterials like that in the bloodstream, organs, and even the brain.
That's enough of a concern for the whole class, before we start to care about them "all having different effects on the body" (which is barely a given).
WastedCucumber|3 months ago
I'd say that there's sure a health benefit for continuing studies on microplastics. Even if they're difficult to conduct, it's probably a good idea to learn more aboht microplastics and health because, barring some new way to remove microplastics, it seems likely that the ambient concentration of them will only increase in the future.
metalman|3 months ago
klevertree1|3 months ago
On the other hand, as other commenters mention, a lot of the studies on microplastics are sloppily done and the conclusions are overreaching. These toxicology studies are certainly not up to the standard of the safety studies that are run on pharmaceuticals. The question is if they need to be in order for us to take action on microplastics. Personally, I think the risk/reward ratio is now clearly in favor of taking action on microplastics, even if I have some problems with the studies and I'm not as confident as the OP.