MicroplasticHealth

How to Reduce Your Microplastic Exposure: Steps Ranked by Evidence

Important note. No intervention has been validated in a controlled clinical trial to reduce human body burden of microplastics. The steps below are grounded in exposure science — they target confirmed sources and routes of entry — but their effect on measured body burden has not been directly tested in humans.

1. Filter your drinking water — highest evidence basis

Drinking water — whether tap or bottled — is one of the most significant confirmed intake routes for microplastics¹⁶. The WHO (2019) identified improvement of water treatment as the most actionable near-term step to reduce human microplastic intake²⁴.

  • Bottled water typically contains more microplastics than tap water¹⁹
  • Filtration with absolute ratings of 1 micron or below removes the vast majority of microplastic particles
  • Reverse osmosis systems provide the highest reduction rates (99%+)

What to look for: Absolute (not nominal) filtration rating of 1 micron or below; NSF/ANSI 53 certification for pitcher/under-sink filters; NSF/ANSI 58 for reverse osmosis systems. See our curated water filter directory →

2. Replace plastic cutting boards

The Yadav et al. (2023) study established plastic cutting boards as a significant and previously underappreciated source of microplastic ingestion during food preparation — an estimated 14–71 million polyethylene particles per board per year⁶.

Switch to: wood, bamboo, or glass cutting boards.

3. Switch from plastic to loose-leaf tea

The Hernandez et al. (2019) McGill study found that a single plastic pyramid teabag releases approximately 11.6 billion microplastic particles per cup⁵. For regular tea drinkers this is one of the single highest-exposure individual sources.

Switch to: loose-leaf tea in a stainless steel or glass infuser, or paper-only tea bags.

4. Replace plastic food containers

Heating food in plastic containers increases chemical migration²⁴ and likely increases particle release. The WHO recommends reducing plastic food contact as a precautionary measure.

Switch to: glass or stainless steel containers for storage and heating.

5. Use a laundry microfibre filter

Synthetic textiles (polyester, nylon, acrylic) are a major source of airborne and waterborne microplastic fibres. Washing releases hundreds of thousands of microfibres per cycle, which pass through most domestic filters and wastewater treatment into waterways — and back into water supplies²0.

Install: a washing machine microfibre filter (e.g. PlanetCare, Filtrol).

6. Improve indoor air quality

Indoor air can contain higher microplastic fibre concentrations than outdoor air. Human inhalation is a confirmed microplastic exposure route¹⁴.

Steps: vacuum frequently with a HEPA-filter vacuum; ventilate regularly; choose natural fibre textiles for bedding and clothing in contact with skin.

What not to worry about

Some widely circulated recommendations have limited evidence of meaningful impact:

  • Detox supplements claiming to remove microplastics: no clinical validation as of 2026. See the detox evidence review.
  • Avoiding sea salt: real but very small contribution relative to water and food containers¹⁶
  • Extreme plastic avoidance: the marginal benefit beyond the high-impact sources above has not been studied.

References

  1. [1]Cox, K.D. et al. (2019). Human Consumption of Microplastics. Environmental Science & Technology, 53(12), 7068–7074. doi.org/10.1021/acs.est.9b01517
  2. [2]World Health Organization (2019). Microplastics in Drinking-water. WHO, Geneva. ISBN 978-92-4-151619-8. https://www.who.int/publications/i/item/9789241516198
  3. [3]Pivokonsky, M. et al. (2018). Occurrence of microplastics in raw and treated drinking water. Science of the Total Environment, 643, 1644–1651. doi.org/10.1016/j.scitotenv.2018.08.102
  4. [4]Yadav, H. et al. (2023). Cutting Boards: An Overlooked Source of Microplastics in Human Food?. Environmental Science & Technology, 57(22), 8225–8235. doi.org/10.1021/acs.est.3c00924
  5. [5]Hernandez, L.M. et al. (2019). Plastic Teabags Release Billions of Microparticles and Nanoparticles into Tea. Environmental Science & Technology, 53(21), 12300–12310. doi.org/10.1021/acs.est.9b02540
  6. [6]Rochman, C.M. et al. (2024). Twenty years of microplastic pollution research — what have we learned?. Science, 386(6718). doi.org/10.1126/science.adl2746
  7. [7]Prata, J.C. et al. (2020). Environmental exposure to microplastics: An overview on possible human health effects. Science of the Total Environment, 702, 134455. doi.org/10.1016/j.scitotenv.2019.134455

Last reviewed: June 2026 · Next review: December 2026