Researchers find air pollution particles penetrating human brain tissue

Researchers from the Rush Alzheimer’s Disease Center and other institutions have discovered that certain air pollution particles can penetrate deep into the human brain. By examining the brain tissue of 11 individuals aged 80 to 91, scientists found particles reaching the amygdala, a region critical for emotion and memory.

The findings suggest a direct correlation between pollution and neurological conditions such as dementia, Parkinson’s, and autism, rather than just an indirect impact through the body. Specifically, studies indicate that microplastics are lodging themselves within brain tissue.

Additionally, research from Great Britain suggests that exposure to PM2.5 particles in high-pollution areas is linked to an increased risk of Alzheimer's disease. Caleb Finch, Professor emeritus at the University of Southern California, noted that the risk of dementia increases in proportion to the amount of air pollution encountered.