What do microplastics do to your digestive system?

What's actually in it

Microplastics from food containers, bottles, and packaging end up in your gut when you eat or drink. The digestive system exposes these particles to stomach acid, bile, and digestive enzymes. That process changes the particles and can release the chemicals absorbed on their surface or built into the plastic itself.

Your gut lining is also a barrier between the contents of your intestines and your bloodstream. Microplastics can physically disrupt that barrier.

What the research says

A 2026 study in Food Chem simulated human digestion with microplastics and tracked what happened. Researchers found that microplastics underwent surface modifications during digestion that released chemicals and interfered with digestive enzymes. The particles didn't just pass through unchanged. The digestive process activated their toxic potential.

This is a gut-specific concern separate from what happens after particles absorb into the bloodstream. Damage to digestive function itself can affect nutrient absorption and gut immune defenses.

Reducing plastic in your food chain reduces what your gut has to deal with. Store and prepare food in glass food storage to cut out the main dietary source of microplastic ingestion.