Can nanoplastics that move through the food chain affect gut and liver health?

What nanoplastics are

Nanoplastics are tiny plastic pieces smaller than 1 micrometer. They can come from broken-down packaging, synthetic textiles, tire dust, and other plastic waste.

Some nanoplastics can move through food webs. That means one living thing takes them in, then another living thing eats it.

What the research says

A 2026 mouse study in Ecotoxicology and Environmental Safety tested food-chain-transferred polystyrene nanoplastics. The study found changes in gut bacteria, disrupted metabolism, and liver gene changes in mice.

The study also linked these effects to the gut-liver axis. That is the way the gut and liver send chemical signals to each other. This is useful science, but it is not proof that one food package or one meal causes harm in people.

What to do at home

You cannot remove all nanoplastics from food. You can lower extra plastic contact in your own kitchen. Store leftovers in glass when you can. Do not heat food in plastic. Keep food away from worn or scratched plastic containers.