Are you keeping a mental list of all the sources of microplastics finding their way into your daily life? You may have another culprit to consider: It’s gum, according to a new pilot study that found chewing just one piece can release hundreds to thousands of microplastics into saliva.

Researchers have found yet another potential contributor to the increasing amount of microplastics found in our bodies: gum. According to a pilot study presented during the American Chemical Society’s spring meeting,