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Microplastics have recently become understood, but humans have lived with a lot of plastic for many, many decades now.

Wouldn't it most likely be nothing significant? We love plastic because it's so inert..

The problem with microplastics is that it's forever breaking down in very small amount of very reactive substances.

Hell, when chewing gum is made of plastic, I don't think we need to worry about the microplastics in the food.

Why is that? Chewing gum is perfectly avoidable, ingesting food not so much.