Is wearing polyester linked to microplastic exposure?

What's actually in it

Polyester is a synthetic plastic fiber. When you wear it, wash it, or even just move in it, the fabric sheds tiny pieces called microfibers. These are a type of microplastic. You aren't just wearing these fibers: you are breathing them in and swallowing them.

Research shows these plastic particles are now everywhere in our homes, according to a 2026 study in Chemosphere. They don't just stay on your clothes. They move into the air you breathe and the dust in your living space.

What the research says

The science is clear that these fibers have real effects on the human body. A 2026 study in Environ Res found that repeated exposure to washing-machine lint microfibers can cause lung inflammation. This inflammation may interfere with how your cells function and even impact your DNA replication.

The problem goes beyond just your lungs. A 2026 study in NanoImpact detected microplastics in human reproductive fluids, including amniotic fluid. Furthermore, a 2026 study in Drug Chem Toxicol confirmed that swallowing plastic particles like polyethylene terephthalate (the plastic used to make polyester) causes metabolic and gut issues.

This peer-reviewed research shows that your clothing is a constant source of plastic exposure. Every time you wear synthetic fabrics, you increase your risk of taking these particles into your body.