Microplastics and our exposure to them is a growing concern these days. Not only do microplastics pollute our environment, including food, but they are also found in all of us. Thus there is interest in how to lower our exposure to them.
A recent small study found that chewing gum can be a source of microplastics. Researchers found that chewing gum releases hundreds to thousands of microplastics per piece (depending on the brand) into our saliva in the mouth - which we then swallow. The first two minutes of chewing on a fresh piece of gum is when the most microplastics are released into the mouth.
How could that be? Chewing gums are made from a rubbery base, sweetener, flavorings, and other ingredients. Natural gum products use a plant-based polymer, such as chicle or other tree sap, to achieve the right chewiness. But most gums sold in stores is synthetic gum, which contain petroleum-based polymers (plastic!) to get that chewy effect. In other words, with these gums a person is chewing on plastic!
Gum ingredient lists do not mention that plastics are in them, and may only say "gum based".
In the study, 5 brands of natural gums and 5 brands of synthetic gums were tested. Surprisingly, both natural and synthetic gums released microplastics (up to 3,000 plastic particles per synthetic gum piece). While the results are concerning, note that bottled water releases many more tiny particles of plastic - one study found an average of 240,000 plastic pieces in a liter of bottled water.
From Medical Xpress: Chewing gum releases microplastics into mouth: researchers
Gum gets some of its chewiness from polymers similar to those used in car tires. Chewing gum releases hundreds of tiny plastic pieces straight into people's mouths, researchers said on Tuesday, also warning of the pollution created by the rubber-based sweet. ...continue reading "Chewing Gum Is A Source of Microplastics"
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