How avoid microplasics?

It's too late to avoid them. Microplastics are being found literally everywhere on the planet.

I'm going to take a different approach than most of the other comments here: you can't. Microplastics are in the air and a large chunk of it comes from car tire residue. You're breathing it, likely right now. Research is still in the early phases and we just don't know how bad it is yet, both from the proliferation and the impact side of things.

Source is Breaking the Plastic Wave and Overview on the occurrence of microplastics in air.

They’re in he air, the water, the food, your brain, apparently. Your reproductive fluids…there’s literally no escape. We signed this pact with satan when capitalism determined that profit is the only thing that matters.

The first step we could take? Bringing the exploitative and murderous system of capitalism to its knees. So we can promptly shoot it in the back of the head. Then, maaaybe our children’s children’s children would have an option to avoid microplastics.

https://www.aamc.org/news/microplastics-are-inside-us-all-what-does-mean-our-health

My take-aways from this article:
There's no good study on microplastics in humans.
They've tested "pristine" plastic on mice and it's pretty bad.
The plastics we're exposed to are loaded with chemicals and toxins.

She carries a stainless-steel water bottle and avoids plastic water bottles. She doesn’t microwave food in plastic containers and only uses glass, wood, or metal kitchen items, including mixing bowls, spoons, cutting boards, and food storage containers.

takes her shoes off to avoid tracking in dust from the outside and uses a HEPA filter to capture particles from the air.

Great point. Tires are one of the leading products polluting our environment and lungs.

This article also links to The Program on Reproductive Health and the Environment at UCSF which offers a guide for minimizing exposure to bad stuff. https://prhe.ucsf.edu/toxic-matters

Here's a relevant NYT Article - How to Minimize Your Exposure to Microplastics

I read an article not that long ago that stated that they're in men's testicles and women's ovaries. In other words, they have become a part of your physical body and will become a part of the bodies of the next generation (likely several generations). They're unavoidable.

Move to a different planet? I think this cat is out of the bag, they are everywhere now, it's the lead of the current generation.

The steps you listed seem like reasonable action anyway, but there simply isn't anything you can do to avoid them here.

The main ways you're exposed to microplastics is through ingestion and breathing it in.

To limit ingestion, yes the main thing to do is to avoid food and drink that comes in plastic containers. Reducing your consumption of processed foods will help with this. Eating mostly produce is a simpler way to approach this. Even though produce may often be transported in plastic, if you wash it before consumption you'll have done pretty well. Ideally you would also have a reverse osmosis filter at home, as your water probably has microplastics as well (but less than bottled water!).

To limit breathing it in, yes avoid frequent exposure to busy roads. They are often full of tire dust that is getting kicked up. This is cumulative, though. Walking by a busy street once is no big deal. Walking along one twice a day may add up.

Overall, however, to address microplastics we will have to control the production of plastics and the use of plastics in the first place. For example, there would be a lot less tire dust if we used more rail to get around. And there would be less need for bottled water if water fountains were ubiquitous and so were standardized stainless steel water bottles. In addition, we could use biodegradable plastics for more packaging so that they don't accumulate in bodies or the environment.

But this last point, despite being the only real solution, will literally require the overthrow of capitalism. I'm for this and am happy to talk about it more, but it is a lot.

That's the fun part. You don't.

Dude they literally pervade the vast majority of the planet’s ecosystem at this point. That ship sailed a long, long time ago.

Some people here say space, but anything that takes you to space contains microplastics, in fact you yourself contain microplastic. The only way to avoid microplastics is simply to not exist at all. And I don't mean dying, when you die you still have microplastics in your body.

The two most common sources of microplastics that enter your body are from the vessels you eat/drink from, and from particles in the air from things like clothes, carpets, furniture, linens.

How to avoid? Use stainless steel, aluminum, copper, (or other metals), ceramic, or glass storage vessels for things like water (including your Brita) for warming things in the microwave, or for storing food, and reduce buying things in plastic if you plan on keeping them there for awhile (eg glass ketchup bottle). Replace any plastic water pipes in your wall with good ol copper. My main water vessels are all stainless steel.

For particulate, consider air filtration, buy clothes/furniture/carpets made from natural animal/ sources like cotton, wool, bamboo, avoiding plastics like polyester. That includes your scrubbing utensil for dishes. Your carpets are probably made with some sort of plastic, so if it's too much to do hardwood, or replace with a natural fibre, the Dyson vacuums are good at getting out loose microplastics.

Be warned, one time I almost bought a stainless steel cup from a reputable retailer, and upon further investigation it was just plastic with a steel coating.. Yep, made in Communist China..

Just embrace them

Become a communist and start advocating for workers to run the economy because we wouldn't fuck ourselves over like capitalists will.

Read a material science book. Then think about exposure anytime you see plastic.

Don’t cook with Teflon or otherwise coated pans. Stainless steel, carbon steel or cast iron (can be enameled).