Microplastics, ubiquitous in our environment, have begun infiltrating even the most protected areas of our bodies. A recent study published in Nature Medicine uncovers that human brain samples contain seven to thirty times more micro and nanoplastics than kidney and liver samples. The research, which analyzed 52 autopsy samples, highlights concerning trends, with individuals who died in 2024 showing significantly higher levels of plastic pollution than those who passed away in 2016, roughly equivalent to the volume found in a plastic spoon. While the implications for neurological health are still unclear, the correlation between microplastics and health issues such as dementia has raised questions among researchers. According to lead author Matthew Campen, continued investigation into the potential health effects of micro and nanoplastics is critical, given their increasing concentration in our bodies and environment.