What You Need to Know About CTE, the Brain Disease Linked to the NYC Shooter's Mental Health Struggles

The Growing Crisis of CTE in American Football

A degenerative brain disease that has plagued the National Football League (NFL) for over two decades, leading to a billion-dollar lawsuit, congressional hearings, an A-list movie, and a steady stream of ex-players’ obituaries, has now taken a more violent turn. This condition, known as chronic traumatic encephalopathy (CTE), has once again made headlines after a Las Vegas casino worker allegedly killed four people in a New York City skyscraper that houses the NFL's headquarters.

The suspect, Shane Tamura, 27, was found with a three-page note in his wallet stating he suffered from CTE, a condition that can only be diagnosed after death. In the note, he expressed frustration over the NFL’s handling of player safety and claimed that the league prioritized profits over the well-being of athletes. He also implored those who found him to “study my brain,” hinting at his belief that his own mental health issues were linked to his time as a high school football player.

Tamura shot himself in the chest, preserving his brain for an autopsy that could confirm whether his self-diagnosis was accurate. His actions echo a disturbing trend among former NFL players, many of whom have died by suicide, often linked to the long-term effects of repeated head trauma.

What is CTE?

Chronic traumatic encephalopathy is a progressive brain disease that affects areas of the brain responsible for regulating behavior and emotions. It can lead to memory loss, depression, violent mood swings, and other cognitive and behavioral issues. However, experts note that these symptoms can also be associated with other neurological conditions.

The onset of symptoms can occur years or even decades after the last head injury. While CTE is most commonly associated with professional athletes, evidence has shown that it can also affect high school athletes who experience repeated concussions and head trauma.

Why is CTE Linked to the NFL?

Research has established a strong connection between CTE and contact sports, including football, as well as military combat. Repeated blows to the head are a key factor in the development of the disease. After years of denying any link between football and CTE, the NFL finally acknowledged the connection in 2016 during congressional testimony. To date, the league has paid over $1.4 billion to retired players to settle concussion-related claims.

The 2015 film "Concussion," starring Will Smith, highlighted the work of forensic pathologist Bennet Omalu, who first diagnosed CTE in a former NFL player, Mike Webster. Other notable NFL players, such as Ken Stabler, Frank Gifford, Junior Seau, and Aaron Hernandez, have also been found to have CTE. A 2017 study revealed that 110 out of 111 former NFL players' brains examined showed signs of the disease.

Did the NFL Headquarters Shooter Have CTE?

It remains unclear whether Shane Tamura actually had CTE. Currently, the only definitive way to diagnose the condition is through an autopsy, which involves examining the brain posthumously. According to the Chronic Traumatic Encephalopathy Center at Boston University, CTE is characterized by the buildup of an abnormal protein called tau in a specific pattern that differentiates it from other neurodegenerative diseases like Alzheimer’s.

Despite the growing awareness of CTE and its impact on athletes, there is still much that remains unknown about the long-term effects of repeated head trauma. As more cases emerge and research continues, the conversation around player safety and the future of contact sports remains urgent and complex.