Can plastic food-contact items add microplastic exposure?
Use caution with plastic food-contact items, especially heat and repeated use. A 2025 NPJ Science of Food evidence map found normal intended use of plastic food-contact articles can lead to micro- and nanoplastic migration.
What is actually in it
Food-contact items include storage containers, lids, films, bottles, cups, bags, liners, and processing equipment. Plastic parts can shed microplastics and nanoplastics during normal use.
Heat, scratching, dishwashing, and long reuse can make plastic food contact more important. Glass and ceramic containers are not plastic, but lids, seals, and coatings can still matter.
What the research says
A 2025 NPJ Science of Food evidence map reviewed 103 studies on food-contact articles and micro- or nanoplastic migration. The authors concluded that normal intended use of plastic food-contact articles can lead to migration into food or food simulants.
This does not mean every plastic container is an emergency. It does support using lower-plastic options for the highest-contact jobs.
What to do at home
Use glass or ceramic for reheating, hot leftovers, oily foods, and long storage. Use stainless steel for lunches and dry snacks. Retire plastic containers when they are scratched, cloudy, warped, or sticky.
You do not need to replace everything at once. Start with the containers used for hot food.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Food contact articles as source of micro- and nanoplastics: a systematic evidence map. | NPJ Sci Food | 2025 |