Can microplastics from plastic food containers damage the gut lining?

What's actually in it

The gut lining is a single-cell-thick barrier between your digestive tract and your bloodstream. It has to be intact to keep bacteria, toxins, and undigested food out of circulation. When this barrier is compromised ("leaky gut"), inflammatory compounds and pathogens cross into the bloodstream and trigger systemic inflammation.

PET microplastics from food containers get ingested with every meal eaten from plastic dishes or stored in plastic packaging. In the gut, they contact the lining cells directly.

What the research says

A 2026 study in J Agric Food Chem found that foodborne PET microplastics compromise the intestinal barrier through a mitochondrial damage mechanism. The plastic particles entered gut lining cells and disrupted mitochondrial function, causing cell damage and increased gut permeability. The gut lining became leakier after PET microplastic exposure.

This connects the daily use of plastic food containers directly to gut barrier function through a specific cellular mechanism.

Removing plastic from food contact reduces gut lining exposure to PET particles. Glass food storage contains no PET, no microplastics, and poses no gut barrier risk.