As a senior and a blue collar worker who is exposed to fine particles in the air from the machinery I run, this article worries me.

The Evidence is Strong Air Pollution Seems To Cause Dementia

"Researchers now better understand what happens in the brain when you breathe polluted air—and how that can lead to neurodegeneration years later. When you inhale pollutants, the smallest particles, emitted by cars, power plants, and other places where fuel is burned, lodge in your lungs’ sensitive tissue or pass into your bloodstream. In those places they trigger an immune response that seeks to trap, contain, and remove the invading particles. In time that response generalizes to what we call systemic inflammation, or an overactive, overly excited immune response across the body."