Beyond your personal intake though there's bigger fish.
Car tyres are the #1 source for microplastics entering rivers, and it's not even close (they're thought to be the source of up to 85% of all environmental microplastics).
Those particulates don't just vanish, they end up in the soil and the waterways and it ends up inside you, no matter what you do.
>microwaving in plastic bowls
For instance the same thing happens with plastic tea bags in hot water: https://www.sciencedirect.com/science/article/pii/S004565352...
I would also avoid all nonstick pans and utensils, as they're lined with PFAS which is worse than plastic, and slowly it will break off into the food. Beware the industry shills on this forum, as they will have you ignore the fact that ingesting PFAS is well known to result in higher blood levels of PFAS.
There are _plastic_ tea bags? Really?
Didnt know that we reached that level of degredation already! :-D
Another example comes to my mind: In lot of European conutries, at "cheese corner/bar" in the supermarket, every time a piece of cheese is cut, they are removing the foil, cutting the cheese, and then re-packing it in new foil after that - and this for every chees bar in every supermarket: How much kilometers does just one branch waste per year?
The exposure from food packaging is many times more prominent than polyester, which slows down leeching over time.
Also, stop using dishwashing pods and laundry pods with the dissolvable plastic layer encasing them. Use powder or liquid detergent instead. If you can't find it in store, look for it online, because it definitely is in stock.
Do EVs create more microplastics than ICE vehicles then?
The modern world is exhausting sometimes.
I doubt it. The article suggests most is from inhaling indoor dust from synthetic textiles.
Im seems using rubber/plastic compounds for tyres and brakes is always going to cause this issue on any vehicle.
Almost every train I know use metal wheels. We can look at the few that don’t, but something tells me people who raise that argument don’t want to look at alternative wheel composition, but rather hope to seed doubt and, in private, lobby replace one metro with thousands of cars, and I’m not sure that’s a good idea.
So, please, don’t come in here with that bullshit.
Saying HEPA filters remove "99%" of microplastic is pretty misleading.
Most of the mass in airborne particles is in the larger sizes of visible dust. However these particles will "fall out" before they reach the air purifier.
The best advice isn't "use only HEPA" or (an odd one, from this article) "use filters with multiple stages," it's to have an air purifier where the Clean Air Delivery Rate (CADR) is matched to room size. For filtering large dust you need a lot of air flow, aim for 6-8 Air Changes per Hour (ACH).
Also the CADR on the box is always on the highest fan speed, which is always way too loud for constant use in an occupied room. So ideally you want to size the air purifiers assuming a fan speed generating 45 decibels or less. HouseFresh is an excellent review site that publishes these numbers.
Most people dramatically undersize their air purifiers, or run them on a very low fan setting, and then they throw up their hands and say that air purifiers don't work.
This was an experiment run without consent, and without accountability. Much like our experiment with atmospheric CO2, these companies are making profits by dumping the liabilities onto the public.
replacements are cheap on aliexpress coming at around $30 (per year). You don't need true hepa replacements, you can skip carbon filters if you don't have odor problems or have lots of ventilation.
the filters are pitch black every time I replace them so they're definitely doing something.
I do however recommend skipping all of that and just getting a box fan with a lower-tier merv filter since at the end of the day airflow matters the most and it turns itself back on if the power goes out plus it gives you the ability to tie it into home automation.
So much of the scare revolves around the same framing, "microplastic" have been found in breast milk/blood whatever, but never seen one mentioning what it can possibly cause. Is it too hard to fathom that the answer is "nothing"?
Instead, you have articles like this trying to tell people to look away from that main source of problem, and blame, say, indoors or food preparation, and skip details like how the homes with the most microplastic in them are… close to the highway.
https://pubmed.ncbi.nlm.nih.gov/21605673/
> In 2017 the European Chemicals Agency concluded that BPA should be listed as a substance of very high concern due to its properties as an endocrine disruptor.[30] In 2023, the European Food Safety Authority re-evaluated the safety of BFA and significantly reduced tolerable daily intake (TDI) to 0.2 nanograms (0.2 billionths of a gram), 20,000 times lower than the previous TDI from 2015.
> In 2012, the United States' Food and Drug Administration (FDA) banned the use of BPA in baby bottles intended for children under 12 months.[31] The Natural Resources Defense Council called the move inadequate, saying the FDA needed to ban BPA from all food packaging.
https://en.wikipedia.org/wiki/Health_effects_of_Bisphenol_A
> This followed another paper in early 2024, where a group of Italian researchers identified microplastics in plaques found in the carotid arteries – a pair of major vessels which deliver blood to the brain – of people with early-stage cardiovascular disease. This linked their presence to worsening disease progression. Over the following three years, individuals carrying these microplastics in their plaques had a 4.5-fold greater risk of stroke, heart attack or sudden death.
> Then in February 2025, another group of scientists identified microplastics in the brains of human cadavers. Most notably, those who had been diagnosed with dementia prior to their death had up to 10 times as much plastic in their brains compared to those without the condition. "We were shocked," says Matthew Campen, a University of New Mexico toxicology professor who led this study.
https://www.bbc.co.uk/future/article/20250723-how-do-the-mic...
source: https://link.springer.com/article/10.1186/s12989-022-00453-2
So, it's having an effect of some kind.
PC fans with low MERV type filter do great since the smaller the particle (I think this effect kicks in below 5 microns) the better it is at filtering it so if it can pass 10 times more air than a hepa filter it's as effective as one while being able to filter more air faster and keeping the particles airbone.
The only downside is that small range of particles where lower merv filters aren't good enough to filter so upwards of 70% of the particles pass through
If you need to filter "one and done" (like pumping air into a hospital operating room), that's where you need HEPA. Most home air purifiers mix the clean air back into the same room, so MERV is closer to the ideal sweet spot.
It's also important to buy reputable brands of MERV filter, ideally ones which have a large number of folds (surface area) like the 3M 1900 MPR. In recent testing about half of filter brands scored well below their claimed MERV rating:
I believe something is better than nothing here. One of the biggest complaints against air filters is noise so maybe a good compromise would be to run them at full speed and full noise for a certain amount of time or something when nobody is in the room?
I too would like such a "shy" air purifier, but manufacturers always seem to go the other way: when occupancy is detected they increase the fan speed.
Best option IMO is just to get an air purifier with a good CADR-to-decibel ratio and then (again) size it correctly. A surprisingly good option is something called the Airfanta 3 Pro, which is basically like those wildfire filter boxes except it uses PC fans.
It is not expensive to run intake fans in the spring and fall seasons when active heating or cooling are not required.
Even in the recent Veritasium video about it they said that unless the chemical was heated to above ~300 degress C if will pass through the human digestive system without causing any harm.
If you just have a lot of dust then you want highest airflow possible (around MERV 9-10) if you want to filter things that cause allergies you need to go as high as MERV 14 since MERV 9-10 effectiveness is super low in that specific range.
Positive pressure systems are great, love 'em, but there's a quantitative mismatch in this case. Above ~1 ACH your HVAC costs will go through the roof (even with heat/humidity recovery), but for effective filtration you need 6-8 ACH to catch the larger dust before your lungs do.
That we haven't observed such extreme behaviour in a scientific way in humans doesn't mean it isn't there, it's just that we haven't yet scientifically observed anything. That there is some evidence in favour of it having adverse effects somewhat defeats the idea that it's "provably non-harmful", which is your current stance.
It might be interesting; instead of downplaying the harm, to see if we can observe any patterns that fit with these findings over the course of human history with the introduction of microplastics...
and if we were to do that, we'd find some interesting correlation, even if it's not provably causation yet.
https://www.healio.com/news/endocrinology/20120325/generatio...
We also know that plastics are a source of hormone disrupting chemicals; https://health.clevelandclinic.org/how-environmental-toxins-...
Bury your head I guess? Just make sure it's not a polyester pillowcase.
Someone who repeats, jokingly or not, an argument that was placed somewhere deniable. One lab, looking at a small study, published a correction saying their estimates were wrong because they didn’t realize how their gloves accounted for it. Do you know who knew about that? Every intern in every lab ever. This was a minor correction that should never has reached anyone except the 10 readers of their original report.
But, strangely, that story got a wide coverage in the press: the usual “science” publication, the trade press, even widespread media. Why? Because it was presented as a “They are making things up about micro-plastics” piece, and those can go really far. And that kind of coverage doesn’t happen by accident.
So no, I don’t think you did that deliberately. But I know you read about it recently; I know you didn’t check what that original story was that triggered the coverage; I know you found that quaint—and I have no reason to think you deliberately tried to spread misinformation. But, you did. Because the people who want to sow doubt know what they are doing.
That study is interesting because they used SEM to image the plastic afterward, and you can see how the plastic surface has literally been torn up on a microscopic level simply by touching hot water.
Plastic has a low-energy surface, which means it doesn't take much energy to tear it apart. Even Brownian motion is enough, which is pretty wild.
The user is deliberately and blatantly ignoring a wealth of scientific literature that exists. Also, plastics come bundled with numerous other harmful classes of chemicals, e.g. phthalates, bisphenols, etc. The risk is not merely in the brain, but also in blood vessels, including those adjacent to the heart.
Beware the plastics industry shills on this page. They will have you ignore the science, become infertile, and then have you die, all for their temporary gain.
I never mentioned train wheels at all. Their brake pads are made from things like carbon, ceramic, and resin compounds. These wear down like any brake pads and so cause the same dust pollution. Remember that some trains in the world are over a mile long and have over 1000 wheels.
I dont see anybody claiming that bikes or trains cause anywhere near the same level as cars, but it is important to remember that they still do cause some and so they are not a silver bullet. Solutions still need advancing in order to completely remove these pollutants from human transportation systems.
Stop protecting your argument by trying to say something small doesnt matter. It all matters, regardless of size.
If the argument is that microplastics are harmful to health, surely we should be looking at all sources of them instead of just the biggest?
My argument is 'Lets try to make all vehicle tyres and brakes from something that doesnt pollute the earth and harm animal life on it.'
Yours seems to be 'Lets ignore the plastic pollution from other transport because cars cause the most, so thats all we need to worry about.'
You are welcome to edit your comment to clarify.
Bikes have tyre pollution, and trains have brake pollution. Seems like a pretty simple statement to me.
Interesting that you have moved from arguing the point into semantics now without addressing anything else. You are welcome to remove your downvotes.
People seem to get very upset when others point out that transport like bikes and trains still cause the same pollution as cars. yes it is much less, possibly orders of magnitude so, but they still cause it. Perhaps instead of getting the pitchforks out we could work together to find better wheel and brake solutions for all transpotation methods which dont cause so much toxic dust.
In plain words, it’s your guess against theirs, except they had done research and published a paper with a claim and you are simply saying they are not rigorous enough. Could you point to more rigorous support of your claim?
Is there any real difference between the more expensive shelf places ("on eye height") than the more cheap one?
Id suspect its just intelligent re-labelling/re-packing for different brands?
Or is there really a difference in the quality/taste of the expensive ones?
In my country, it doesnt matter if i spend 2 bucks or 5 bucks in the supermarket
If we are still talking about tea, then of course there are huge differences. And the best tea is not packaged in individual tea bags (also it's not sold in supermarkets unless it's a country with a very high tea culture).
So at the low end you would have tea that is grown with lots of chemicals, plucked by machines or by badly paid workers, industrially processed in high quantities, sold as bulk on international markets. While on the highest end you would have artisanal small-batch tea with no chemicals involved, possibly grown in some special way like the tea bushes shaded from the sun or hundred years old tea trees in forested areas, processed by hand so the leaves are not broken etc... And all of this is reflected in the taste.
- Microplastics found in 76% of human semen samples, with PET-exposed men showing reduced sperm motility: https://pmc.ncbi.nlm.nih.gov/articles/PMC12299061/
- Multi-site study across China (113 men), PTFE microplastics linked to sperm dysfunction (published in eBioMedicine/Lancet): https://www.thelancet.com/journals/ebiom/article/PIIS2352-39...
- Microplastics found in every human testicle sampled, at 3x the concentration of dogs, with PVC correlating to lower sperm count in canines: https://pubmed.ncbi.nlm.nih.gov/36948312/
- In-vitro exposure of human semen to polystyrene MPs showed time-dependent decline in motility and increased DNA fragmentation: https://www.mdpi.com/2305-6304/13/7/605
The mouse study I linked earlier isn't the whole picture; it's one piece. The "no human evidence" line was maybe defensible in 2022. It isn't anymore.
Also, re: "1000 mg/L is unrealistic".. the study used two doses, 100 μg/L and 1000 μg/L. Raw surface water in Amsterdam has been measured at ~50 μg/L. The lower experimental dose is well within an order of magnitude of real-world contamination. That's how dose-response science works.
Comparing this to homeopathy is… a choice.
First:
>no significant association was found between MP exposure and sperm concentration or total sperm count
Second: N=34
Third (if second didn't give it away): The one effect they did find sits at p=0.056. That means one in 18 random studies will find that effect just because of probability statistics. And as you have nicely pointed out, there are maaaany studies like this out there. You just don't find all the null results if you go into research with your mindset. But that is exactly what differentiates a scientist looking for truth from a hobbyist trying to argue on the internet.
https://www.sciencedirect.com/science/article/abs/pii/S03043...
It found microplastics caused a decrease of 5.99 million/mL in sperm concentration, 14.62% in sperm motility, 23.56% in sperm viability, and a 10.65% increase in sperm abnormality rate. (I copied and pasted these values directly from the source).
You said you'd be "onboard immediately" if someone showed you a rigorous causal link. This is a meta-analysis with an adverse outcome pathway mapping the causal chain from molecular initiating event (ROS) through to tissue-level damage. That's about as rigorous as it gets before human clinical trials, which (for obvious ethical reasons) nobody is going to run.
As for the p=0.056 critique: you picked the weakest single data point from one of four links and declared victory (scientific!). The in-vitro study I linked exposed actual human semen to microplastics under controlled conditions and observed time-dependent decline in motility and increased DNA fragmentation. That's not a simple correlation, it's a direct causal experiment on human tissue. You didn't address it.
The goalposts have moved from "show me evidence" to "show me a meta-review" to "well not THAT meta-review." At some point you have to engage with what the research actually says rather than with what you'd like it to say.
Edit: Oh - lol XD. It literally just told me the science has found no causal link for microplastics harm. Hm. I guess you are just better at researching random studies than us mortals with stupid science degrees and hyped summary machines.
You know this if you have the science degree you're claiming.
As for Google AI Overview: if that's your standard of evidence now, we've come a long way from 'I subscribe to science.'