Is it safe to eat pre-cooked grocery store meals from plastic packaging every day?

What's actually in it

Many pre-cooked grocery meals sit in plastic trays, plastic clamshells, or coated packaging. Fat, heat, and time can move bisphenol compounds from packaging into food.

This matters most when food is heated in its package or sits in plastic for a long time. A cold deli salad once in a while is different from eating packaged pre-cooked meals every day.

What the research says

A 2026 study in J Hazard Mater tested 63 retail pre-cooked food samples from China. Researchers found 13 bisphenol compounds, with total levels from 0.803 to 380.991 nanograms per gram.

The same study compared packaged and unpackaged paired samples. Some bisphenols were higher in packaged samples. Heating food in the package also raised bisphenol levels, which points to migration from packaging.

What to do in the kitchen

Do not reheat food in plastic. Move pre-cooked meals to glass, ceramic, stainless steel, or cast iron before heating.

For daily lunches, batch cook a few simple meals at home and store them in glass containers. If you buy prepared food, ask whether the store can place it in your own clean container. If that is not allowed, transfer it out of plastic when you get home.