The Larger The City You Live In, The More Magnetic Particles Enter Your Brain

‘Can traffic fumes go to your head? Ultra-fine particles of metal in exhaust gases fly up our noses and travel into our brains, where they contribute to diseases associated with the central nervous system, and the more congested the city, the bigger the problem.
Iron nanoparticles were already known to be present in the brain — but they were thought to come from the iron naturally found in our bodies, derived from food.
Now a closer look at their structure suggests the particles mostly come from air pollution sources, like traffic fumes and coal burning. The findings are a smoking gun, says Barbara Maher of Lancaster University in the UK.’
Read more: The Larger The City You Live In, The More Magnetic Particles Enter Your Brain