this post was submitted on 10 Jan 2025
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Summary

A new study from Spain’s Autonomous University of Barcelona reveals that tea bags made from nylon, polypropylene, and cellulose release billions of micro- and nanoplastic particles when steeped in boiling water.

These particles, which can enter human intestinal cells, may pose health risks, potentially affecting the digestive, respiratory, endocrine, and immune systems.

Researchers urge regulatory action to mitigate plastic contamination in food packaging.

Consumers are advised to use loose-leaf tea with stainless steel infusers or biodegradable tea bags to minimize exposure.

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[–] FlyingSquid 117 points 1 month ago (4 children)

What isn't releasing billions of microplastic particles? We're fucked.

[–] andrewta 52 points 1 month ago (6 children)

When someone is getting laid and he drops a load in her, he’s probably injecting microplastics.

Just a thought for next time you are in bed with someone.

[–] FlyingSquid 38 points 1 month ago (4 children)

And if you don't- the condom? Also releasing microplastics. That glass of water you have afterwards because you're all hot and sweaty and thirsty? Also full of microplastics.

[–] SynonymousStoat 22 points 1 month ago (1 children)

As long as you're using latex/nitrile condoms you should be good as latex and nitrile aren't plastics. Some of the alternatives for people with latex allergies can have plastic in them though.

[–] [email protected] 12 points 1 month ago (1 children)
[–] [email protected] 16 points 1 month ago (1 children)

"This stuff is awesome! We can make it into any shape we want, it's cheap, and amazingly durable! MAKE ALL THE THINGS PLASTIC!"

We never stood a chance.

[–] [email protected] 14 points 1 month ago (1 children)

When we had no clue, I mean yeah, sucks, but live and learn. But the fact that all of this evidence has emerged and not much has changed is what's enraging.

[–] [email protected] 10 points 1 month ago (1 children)

The manufacturers had a clue long before we did. Just like leaded gasoline. And fossil fuels in general. And cigarettes. And so on. Nothing changes until governments step in, which sends the "captains of industry" into tantrums like the spoiled pissbabies they are.

That is even more enraging.

[–] aesthelete 7 points 1 month ago* (last edited 1 month ago)

cigarettes

Speaking of, cigarette butts / discarded filters are a major source of microplastic pollution.

[–] SpruceBringsteen 7 points 1 month ago

Smell that sheepskin condom?

You just inhaled plastics.

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[–] [email protected] 18 points 1 month ago (2 children)

My tinfoil hat theory is that we're going to find out that toothbrushes are a major source of them

[–] [email protected] 14 points 1 month ago (1 children)
[–] Dasus 7 points 1 month ago (1 children)

Vegans hate this one trick to avoid microplastics from toothbrushes; horsehair toothbrush.

Also, you guys rinse your mouths, right?

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[–] ChicoSuave 75 points 1 month ago (3 children)

This warning only applies to the pyramid tea bags and not the paper sachet.

[–] random_character_a 29 points 1 month ago* (last edited 1 month ago) (1 children)

It did list cellulose bags as one source, however I don't quite understand how. Additive to strengthen the material?

[–] [email protected] 10 points 1 month ago* (last edited 1 month ago) (2 children)

Plastic coating to make the bag more resistant to heat.

[–] [email protected] 11 points 1 month ago

Oh my god. I think I'll just go back to my teapot.

[–] Teanut 11 points 1 month ago (2 children)

Cellulose isn't plastic though, it's the sugar that makes up plant cell walls, like wood. Cotton fibers are 90% cellulose https://en.wikipedia.org/wiki/Cellulose

I'm confused why they included cellulose without clarifying that it's not a petrochemical, unless cellulose micro and nano particles are also an issue now. Maybe I should read the original study...

[–] [email protected] 9 points 1 month ago (1 children)

What I meant to say is that the cellulose is coated with plastic. I learned this from another post in the same thread.

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[–] [email protected] 13 points 1 month ago

The square with crimped edges bags have plastic in the paper so that the edges will fuse closed.

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[–] [email protected] 41 points 1 month ago* (last edited 1 month ago) (2 children)

Consumers are advised to ...

Consumers are advised to check whether tea bags in their region are even made of these materials.

Edit: Also, "billions"? The cookie warning is borked on the foodandwine.com article so I can't read it but: https://www.dpa-international.com/trends-and-features/urn:newsml:dpa.com:20090101:250109-99-540705/ "Tea bags releasing 'millions' of microplastics into tea, study shows" - where does that difference come from?

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[–] Lennnny 24 points 1 month ago (1 children)

How many micro plastics are released when I cry?

[–] [email protected] 23 points 1 month ago (37 children)

No it doesn’t. This study is unscientific garbage and should be retracted.

Their “simulation” of making tea involved 300 teabags boiled in 600ml of water at 95 C while being stirred at 750rpm for an unspecified amount of time. They then took counts using undiluted samples of that liquid.

It isn’t clear why they chose such an absurd methodology, but it is absolutely spurious to draw conclusions from this about teabags used under normal conditions.

[–] [email protected] 18 points 1 month ago (2 children)

I've worked in a lab before. You would do it this way for a bunch of reasons.

First it's more reliable to measure something if there's a lot than a little. The effects of your measurement uncertainties and your error professional goes down. So better to measure 300 teabags than just 1 if you can find out the same thing from doing it that way.

As others have said, 95 deg C is hot, but it is well short of a boil.

The magnetic stir bar doesn't blend the water, it just moves it around into a swirl, even at 750 rpm because it's small.

If the ideal study would be to steep 1000 teabags in teacups with just-boiled water and measure the micro plastics to see how much is released on average, I can see why they did it this way instead when their focus was on what type of plastic is released vs exactly how much. I'm not sure the food and wine journalist did a great job walking the reader through this though.

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[–] random_character_a 17 points 1 month ago (4 children)

Has anyone checked how much particles I produce when I wash my fleece jacket.

[–] P1nkman 9 points 1 month ago (11 children)
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[–] [email protected] 16 points 1 month ago (3 children)

No!

biodegradable tea bags

You want "compostable" or better, "home compostable". Biodegradable is a word that is completely twisted, and items that include plastics will use that word no matter how untruthful it is to the spirit of the meaning.

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[–] FartsWithAnAccent 15 points 1 month ago* (last edited 1 month ago) (2 children)

No it's not, because I use a stainless steel capsule and loose leaf tea, which is superior in every way (even if microplastics weren't an issue).

If you don't make your tea like this, do yourself a favor and upgrade to some quality loose leaf!

Edit: lol, I love that this is getting downvotes. Are there disposable teabag enthusiasts out there?

[–] [email protected] 33 points 1 month ago (2 children)

Your tea bag...

No, it's not, because I use something other than tea bags.

That's you. That's what you wrote.

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[–] [email protected] 7 points 1 month ago* (last edited 1 month ago) (1 children)

I wish stainless steel infusers weren't dogshit for rooibos :(

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[–] Redditsux 14 points 1 month ago (3 children)

OMG. That's a good way to start the new year. Now my daily tea is going to be filled with guilt and worry.

[–] reddig33 19 points 1 month ago (1 children)

Just buy paper tea bags or loose leaf tea. The article is talking about those stupid nylon “pyramid” tea bags.

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