CTE explained: The brain disease cited by Manhattan shooter in suicide note
Echoing an eerie trend in NFL player suicides, he shot himself in the chest, preserving his brain for an autopsy that could confirm whether his layman's diagnosis was correct.A degenerative brain disease that has been linked to concussions and other head trauma common in military combat and contact sports, CTE 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.Its dangers have led some states to consider banning youth football, prompted leagues at most levels to limit contact drills in practice, and spawned a series of concussion protocols and other rule changes designed to take the most violent edges off the hard-hitting sport.Here is what we know and don't know about the connection between CTE, the NFL and the shooter.WHAT IS CTE?Chronic traumatic encephalopathy can affect regions of the brain involved with regulating behavior and emotions. This can lead to memory loss, depression, violent mood swings and other cognitive and behavioral issues, though researchers note that these symptoms can also be linked to other illnesses.Experts say symptoms can arise years or decades after the last brain trauma. Evidence of the disease has been found not just in those with long professional careers but in high school athletes as well.WHY IS IT ASSOCIATED WITH THE NFL? Researchers have established a connection between CTE and contact sports, military combat and other activities with repeated blows to the head. After more than a decade of denial, the NFL conceded the link between football and CTE in 2016 testimony before Congress, and has so far paid more than $1.4 billion to retired players to settle concussion-related claims.advertisementThe 2015 Will Smith film 'Concussion' detailed the pioneering efforts of forensic pathologist Bennet Omalu, whose diagnosis of CTE in Pittsburgh Steelers Hall of Fame center Mike Webster was the first in a former NFL player. Hall of Famers Ken Stabler, Frank Gifford and Junior Seau have also been diagnosed with CTE, as has Aaron Hernandez; in a 2017 paper, evidence of the disease was found 110 of the 111 former NFL players' brains studied.DID THE NFL HEADQUARTERS SHOOTER HAVE CTE ?It's not possible to say.For now, CTE can only be diagnosed definitively by examining the brain posthumously through an autopsy. According to Boston University's Chronic Traumatic Encephalopathy Center, progressive degeneration of brain tissue in people with CTE includes the buildup of an abnormal protein called tau in a pattern that distinguishes it from other diseases such as Alzheimer's.- Ends
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United News of India
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Time of India
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Indian Express
2 days ago
- Indian Express
All about CTE, ‘brain commotion' caused by sports injuries, that New York shooter claimed to have
In a note that police found in his wallet, the gunman who killed four people in New York on Monday claimed he had chronic traumatic encephalopathy (CTE) — a result of playing [American] football in high school. CTE is a degenerative brain disease linked to repeated brain trauma. It can lead to debilitating symptoms such as depression, memory loss, aggression, impared judgment, erratic behaviour, suicidal tendencies, anxiety, and dizziness. The disease is most commonly diagnosed among athletes, especially those in contact sports, and has been referred to in recent years as a 'silent epidemic' because it often goes undiagnosed and its causes are underplayed. CTE is not caused by a single blow to the head — rather, it is the result of the accumulation of years of concussive and sub-concussive impacts that lead to noticeable and progressively debilitating symptoms over time. (Concussions cause the brain to move rapidly within the skull, potentially stretching and damaging brain cells.) The 'repeated blows to the head… injure the brain's cells and blood vessels, [creating] areas of microscopic bleeding and abnormal protein deposits called tangles, which kill brain cells', says an article on the website of the Harvard Medical School. Researchers have estimated that around 17% of people with years of repetitive concussions or sub-concussive incidents will develop CTE, the article says. The disease can only be definitively diagnosed after death, during autopsy. Greek physician-philosopher Hippocrates (460-377 BCE) described commotio celebri — 'commotion of the brain' — as a vigorous shake or blow to the head that caused temporary loss of speech, hearing, and sight. In the 16th century, the Italian physician Jacopo Berengario da Carpi proposed that this 'brain commotion' was caused by the brain getting 'bruised' after hitting the skull. While da Carpi's understanding of what we now refer to as a concussion was largely accurate, scientists remained unsure until the early 20th century whether such injuries had any long-term impacts. Then, in 1927, neuropsychiatrists Michael Osnato and Vincent Giliberti published a paper in the Journal of the American Medical Association (JAMA) that stated that a concussion was not a 'transient state' — it could lead to 'structural cerebral injury', causing significant 'secondary degenerative changes'. Harrison Martland, a forensic pathologist and boxing enthusiast, immediately linked these findings to the antics of many popular boxers at the time. 'Fans called them 'cuckoo', 'goofy', or 'slug nutty', and people enjoyed screaming at them as they staggered around the ring like intoxicated fools,' an article in The Atlantic said. Martland coined the term 'punch drunk' to describe this disease that afflicted pugilists. 'Punch drunk most often affects fighters of the slugging type…who are usually poor boxers and who take considerable head punishment, seeking only to land a knockout blow,' he wrote in his 1928 submission to JAMA. Martland's claims would be clinically proven in 1973, when neuropathologist J A N Corsellis cracked open the skulls of 15 former boxers and studied their brains under a microscope. In his paper, 'The Aftermath of Boxing', published in Psychological Medicine, Corsellis provided detailed descriptions of damage to the brain tissue of the deceased boxers, and coined the term 'dementia pugilistica' to refer to the disease. But there was still not much mainstream conversation about CTE. Also, the condition was framed as being explicitly boxing-specific. It was not until the 2000s that the scale of the problem began to be understood. A pivotal moment in this story was the death — and subsequent diagnosis — of the legendary Pittsburgh Steelers centre Mike Webster in 2002. Webster died after a heart attack, but he had displayed years of erratic behaviour after his retirement from pro football. 'One day he peed in the oven… He would walk up to strangers and rant. 'Kill 'em! I'm gonna kill 'em!… His teeth started falling out. He got Super Glue, squirted each fallen tooth, and tried to stick them back in…,' The Atlantic article said. When pathologist Bennet Omalu examined Webster's brain under a microscope, his findings echoed those of Corsellis some 30 years back. The Webster case triggered a lot of CTE research, and eventually led to the National Football League (NFL) acknowledging the link between football and the disease. As research expanded beyond traditional combat sports like boxing, researchers found that even seemingly minor hits had major long-term repercussions. 'When you expose your head to long-force trauma with or without a helmet, with or without symptoms, there is a significant risk of permanent brain damage 40 years later,' Omalu told the BBC in 2015. Growing awareness of CTE has led to many reforms in sport. NFL rules have been modified to better protect players from head trauma, England's Football Association (FA) has banned youth players from deliberately heading the ball, and cricket has introduced the concept of a 'concussion substitute'. Based on our current understanding, however, the risks of CTE can at best be mitigated, not eliminated. Over the past couple of decades, researchers have experimented with all kinds of equipment from helmets to mouthguards to mitigate the risk of CTE among players. Research has looked at woodpeckers, birds that drill into trees without getting concussions. There is currently no treatment or cure for CTE. Athletes in certain sports remain at high risk. In 2023, Boston University's CTE Center studied 376 former NFL players, and diagnosed as many as 345 with CTE.
