This plastic contamination comes from “microplastics” — particles smaller than five millimeters — which are making their way into our food, drinking water and even the air.

Around the world, people ingest an average of around 2,000 microplastic particles a week, according to the study by the University of Newcastle, in Australia.

These tiny particles can originate from a variety of sources, including artificial clothes fibers, microbeads found in some toothpastes, or bigger pieces of plastic which gradually break into smaller pieces when they’re thrown away and exposed to the elements.