“The concentrations we saw in the brain tissue of normal individuals, who had an average age of around 45 or 50 years old, were 4,800 micrograms per gram, or 0.48% by weight,” Campen said.

In the latest study, researchers analysed the distribution of microparticles in dozens of human tissue samples that underwent autopsies in 2016 and 2024, including 52 brain specimens.

Visualization of putative plastics in the brain. Credit: Nature Medicine (2025). DOI: 10.1038/s41591-024-03453-1 ...

“The concentrations we saw in the brain tissue of normal individuals, who had an average age of around 45 or 50 years old, were 4,800 micrograms per gram, or 0.48% by weight,” Campen said.

Cognitively normal human brain samples collected at autopsy in early 2024 contained more tiny shards of plastic than samples collected eight years prior, according to a new study. Overall, cadaver ...

“The concentrations we saw in the brain tissue of normal individuals, who had an average age of around 45 or 50 years old, were 4,800 micrograms per gram, or 0.48% by weight,” Campen said.

Cognitively normal human brain samples collected at autopsy in early 2024 contained more tiny shards of plastic than samples collected eight years prior, according to a new study. Overall, cadaver ...