Do microplastics from food packaging end up in your body?

What's in the packaging

Plastic food packaging isn't a permanent, sealed barrier. Over time, and especially with heat or acidic foods, it sheds microplastics and nanoplastics into whatever it's holding. These particles are invisible to the eye but measurable in lab tests. They come from takeout containers, plastic wrap, sealed trays, drink bottles, and frozen food bags.

Beyond the plastic itself, these particles act as carriers. They can transport other chemicals like heavy metals and additives directly into your food.

What the research says

A 2026 review in Food Research International confirmed that micro and nanoplastics are commonly found in liquid foods and beverages. The particles migrate from packaging during storage, and the rates increase with temperature, acidity, and storage time.

A separate 2026 analysis assessed health risks from nanoparticles consumed through food. The findings showed that these tiny particles can cross the gut barrier, enter the bloodstream, and accumulate in organs. Children face higher risk because they eat more food per kilogram of body weight.

Research on packaged frozen seafood found microplastic contamination at levels researchers flagged as a potential health concern. The contamination came from the packaging itself, not from the ocean.

How to reduce your exposure

Transfer food out of plastic packaging before storing or reheating. Use glass or stainless steel containers. Avoid microwaving food in plastic. Choose fresh foods over heavily packaged options when possible.