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Replace plastic with lead and reread. Lead was used for centuries before the risks were fully understood.

And mercury.

Lead was used for millenia. Romans drank from lead goblets. It sweetened the wine.

And we didn’t know the full story of lead until 20 years after it was banned from gasoline, and the violent crime rates started to drop.

But we haven't used plastic for millennia, and sure while it gets everywhere, some environments are far higher in microplastics than others, so doing comparisons should be easy

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