We found that concentrations of microplastics in brain samples ranged from 7 to 30 times the concentrations seen in livers or kidneys.
The study confirmed that microplastics can cross the blood-brain barrier, allowing these particles to enter the brain tissue.
Brain samples collected in 2024 contained significantly higher concentrations of microplastic, with over 4,800 micrograms per gram of human tissue.
Some samples ranged as high as more than 8,800 micrograms of plastic per gram of brain tissue, highlighting a worrying trend.
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