Most copper in the brain is a problem. It piles up in the wrong places, drives the oxidative chaos that kills neurons, and for years the going wisdom in Alzheimer’s research has been to strip it out New! Sign up for our email newsletter on Substack. New! Sign up for our email newsletter on Substack. Most copper in the brain is a problem. It piles up in the wrong places, drives the oxidative chaos that kills neurons, and for years the going wisdom in Alzheimer’s research has been to strip it out