You should purify the indoor air that you spend a lot of time in. For example, using IQAir or MedicAir (UK) products.
According to new research, over 2,000 liters of tap water would be needed to ingest as many microplastics as from just 8 hours of indoor air:
https://newatlas.com/environment/inhaling-68000-microplastics-home-car-daily/
68,000 small particles inhaled daily is a lot more than ingesting hundreds to a few thousand from water or food.
Environmental micro and nano plastic has been increasing steadily, as has the amount of plastic in our brains. This trend could make most people in the future mentally impaired if we don't adapt.
Nanoplastic is smaller, more airborne, more dangerous, less studied and can more easily pass the blood-brain barrier and penetrate cells.
Water and drinks sold in crushable plastic contain much plastic.
The best kind of water filter is a reverse osmosis filter.
Clothes:
https://www.voguebusiness.com/sustainability/should-synthetic-clothing-be-sold-with-a-warning
I don't recommend ZeroWater anymore:
https://avoidmicroplastics.com/does-zerowater-really-filter-microplastics/
Brain plastic (23-minute video):
Brain plastic (3-minute video):
While the short video casually suggests that we can't individually do much about plastic intake, ChatGPT and Grok find it likely that someone can reduce their microplastic intake by 80-90%, and nanoplastic intake by 40-60%, by adopting the following practices – while Claude finds this optimistic but not entirely unrealistic, and Gemini differs from Claude, finding this highly likely.
As the average answer of three AIs, the practices are ordered from most to least effective in limiting plastic intake:
• Filtering tap water using a reverse osmosis or multi-stage under-sink filter
• Minimally consuming processed and packaged food
• Avoiding plastic teabags, chopping boards and heat-exposed plastic
• Using glass, metal, or ceramic containers and utensils
PS: flexible plastic sheds more than solid plastic
• Using dust-reducing practices — wet mopping/dusting weekly and vacuuming with HEPA filters
• Avoiding single-use plastics
• Using standalone HEPA air purifiers in bedrooms/living areas
• Not using synthetic textiles
• Ventilating while cooking
Using an air purifier provides more value than using a water filter, so that should be at the top of the list. So far, the only big news media to report on the finding is CNN.
ChatGPT, Grok, Gemini and Claude agreed that "air-suspended microplastics can accumulate in a home over many years, even with regular window ventilation" and that "accumulation is likely over years unless aggressive mitigation (e.g., HEPA air purifiers, avoiding synthetics, frequent dust control) is used alongside ventilation. In high-shedding homes (e.g., with many plastics or textiles), accumulation can occur despite open windows."
Claude, the best at complex programming, so possibly the smartest, brought attention to this nuance: “while one study found outdoor microplastic concentrations (2.66 particles m−3) were actually higher than indoor concentrations (1.80 particles m−3), this doesn't necessarily mean window ventilation is ineffective at reducing accumulation from indoor sources.”
The study Claude mentioned is of course an older one which was blind to smaller microplastics.
So, there may be more large microplastics outside and more small microplastics inside, with indoor air being more polluted than outdoor urban air, even if you live in the countryside.
It's easier to detect plastic in water than in the air.
What is important is that there's twice the amount of plastic in people's brains now than there was in 2016 (now equivalent to a plastic fork), and it's mostly nanoplastic, and it'll get worse if we do nothing about it.
Most plastic in the human body is likely accumulated in the brain (new research).
Water filters are good for metals and stuff, but airborne plastic is a bigger problem for modern homes that have decent tap water.
The current state of scientific understanding and practical application is that HEPA filters can filter essentially all nanoparticles, but you have to get AI to look at research in order for it to agree — reminding me that AI is good for quick and acceptable understanding, but not precision unless you use time-consuming modes.
Indoor Airborne Microplastics: Human Health Importance and Effects of Air Filtration and Turbulence: