Earlier this year, scientists discovered that there is about as much microplastics in the brain as a whole plastic spoon. The paper, published in Nature Medicine in February, revealed that the amount of microplastics—tiny plastic particles smaller than 5 millimeters—in the human brain appears to be increasing: Concentrations rose by about 50% between 2016 and 2024.
Not only were there more microplastics in the brain than in liver or kidney tissue, but microplastic concentrations were higher in the brains of dementia patients than in those without it.
