They’re in our water, our food, and our bodies.
A research-backed home for understanding microplastics, where they come from, and the practical changes that lower your exposure, one simple swap at a time.
This isn’t a fringe worry. It’s measured, replicated, and already inside us.
What are microplastics?
Microplastics are plastic particles smaller than 5 millimeters, roughly the size of a sesame seed or smaller. They form in two ways: primary microplastics are manufactured small, like microbeads and synthetic fibers, while secondary microplastics break off larger items as they degrade, like a water bottle, a polyester shirt, or a tea bag.
They don’t biodegrade. They fragment into ever-smaller pieces, including nanoplastics small enough to cross into the bloodstream and organs. That’s why they now turn up everywhere researchers look, from the snow on Mount Everest to the deepest ocean trench, and inside the human body.
Understanding the basics is the first step to lowering your exposure. The full guide breaks down the types, the sources, the health research, and what the science does and doesn’t yet know.
Read the complete guideHow to reduce your exposure
You can’t avoid microplastics entirely, but a few targeted swaps meaningfully lower your daily load. Start with these four.
Avoid microplastics day to day
The practical, room-by-room playbook for cutting exposure at home.
Check your plastics for BPA
A quick guide to reading labels and recycling codes with confidence.
Choose safer kitchen materials
What silicone really is, and the lower-plastic alternatives worth the switch.
Filter what you can’t avoid
How to remove microplastics from your water and reduce what gets in.
Find your plastic-free swap
Search any product category and we’ll take you straight to verified plastic-free alternatives in the directory.
Less plastic, more peace of mind
Join and get the free Microplastics Home Audit Guide, plus research-backed swaps and new guides in your inbox. No spam, just what actually works.
Join the newsletterSources: 1. Leslie et al., Environment International (2022) · 2. Nihart et al., Nature Medicine (2025) · 3. Blood: Leslie et al. (2022); lungs: Jenner et al. (2022); placenta: Ragusa et al. (2021); breast milk: Ragusa et al. (2022) · 4. PlasticsEurope, Plastics the Fast Facts (2025) · 5. NOAA, What are microplastics? · 6. Hernandez et al., Environmental Science & Technology (2019) · 7. Boucher & Friot, IUCN: Primary Microplastics in the Oceans (2017). Last reviewed June 2026.
