Here's what to know about CTE, the brain disease the NYC shooter blamed for his mental health issues
The man who killed four people in the New York City skyscraper that is home to NFL headquarters carried a note blaming the league for his mental health problems. Shane Tamura played football in high school. He said in the three-page note found in his wallet that he had chronic traumatic encephalopathy, a degenerative brain disease that can’t be diagnosed until death, and implored those who found him to study his brain. CTE has been linked to concussions in contact sports. The disease has been diagnosed in more than 100 former NFL players and arisen as an existential threat to the United States’ most powerful pro sports league.