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American Chemical Society on Instagram: "Most chewing gum contains synthetic polymers that make it stretchy and chewy. Because these polymers are a kind of food-grade plastic, researchers at UCLA became curious about the potential presence of microplastics in our saliva. Surprisingly, they found that not only were microplastics shed by conventional, plastic-based gums, but they also appeared with “natural” gums that aren’t manufactured with synthetic ingredients. Click the link in our bio to rea