Pollution fills your brain with metal particles

摘要

Traffic fumes go to your head. Tiny specks of metal in car exhaust gases seem to fly up our noses and travel into our brains, where they may contribute to Alzheimer's disease. Barbara Maher of Lancaster University in the UK and her team looked at the brains of 37 people who had lived in Manchester in the UK or Mexico City. All contained millions of iron oxide nanoparticles per gram of brain tissue (PNAS, DOI:10.1073/pnas.1605941113).