Microplastics are a growing concern. As more plastic materials become integrated into our daily lives, it is believed that humans are ingesting them at a higher rate than in years past. Some studies show the increase to be as much as six times what it was in 1990.
While microplastics may seem like a health buzzword, the studies are accumulating, and the scope of risk to our health is difficult to predict. Using a microwave isn't unsafe, but chucking any old plastic container or food wrap into is where problems can arise.
To find out whether microwaving plastic is a dangerous habit in need of breaking, I spoke with public health experts and toxicologists to learn about the risks of exposing various kitchen containers and packaging materials to microwave radiation. Here's what they said.
Best practices for using containers in the microwave
Microwaves can cause food storage containers to leach chemicals into food. An expert explains how to avoid the issue altogether. Yaroslav Litun/Getty Images
Before we delve into the specific materials and their numerous variables regarding microwave suitability, consider the following.
1. Look for microwave-safe labels only as a starting point
"Microwave safe doesn't just mean a container will not melt or warp, but it also means it will not release or leach harmful chemicals into our food when heated," says Li Li, an associate professor at the University of Nevada, Reno School of Public Health, whose specialty is environmental health and exposure science.
Styrofoam and your microwave are a dangerous combination. GoodLifeStudio/Getty Images
While some materials are generally safe for microwave use, it's still a good habit to look for a "microwave safe" indication of some kind. However, bear in mind that this designation doesn't tell the whole story.
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