Do plastic-lined paper bowls release microplastics into hot soup?

What's actually in it

Disposable paper bowls and cups aren't just paper. They are coated with plastic liners to keep them from getting soggy. When you pour hot soup into these containers, that plastic lining can break down and release microplastics into your meal.

Beyond the plastic itself, these containers can also contain heavy metals and various ions. These substances don't stay in the bowl. They move directly into your food and drink, meaning you end up consuming them with every bite.

What the research says

A 2026 study in Food Chem Toxicol monitored disposable paper cups and found they are a source of microplastics, ions, and heavy metals. This research highlights that these materials are not meant to hold hot liquids without shedding particles into what you eat.

The health risks of ingesting these particles are becoming clearer through ongoing science. For example, a 2026 study in Toxics points to a link between microplastics and diabetes, noting how these particles affect the gut and liver. When you use disposable paper containers, you are choosing to increase your exposure to these materials.