Researchers at the University of New Mexico (UNM) used human tissue derived from autopsies done between 1997 and 2024 to determine the amount of MNP in the brains, livers, and kidneys of the deceased persons. They found that brains had more plastics than the other tissues. In addition, the amount of plastic in all tissues increased over time, so people who died in 1997 had less plastic in their organs than people who died in 2024. They also found that people with dementia had more plastic in their brains than people who died without being diagnosed with dementia.
