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Human brains contain surprising levels of plastic, study says
Human brain samples collected at autopsy in early 2024 had more tiny shards of plastic than those from eight years earlier, according to a preprint posted online in May.
“We think the brain is pulling in the very smallest nanostructures, like 100 to 200 nanometers,” said Campen, noting larger particles go to the liver and kidneys.
Landrigan stated that microplastic particles act like Trojan horses, carrying harmful chemicals present in plastics, but their exact impact is still unclear.