Research has shown that athletes such as footballers, rugby players and fighters like boxers have a significantly higher risk of developing CTE than the general population.
CTE can only be diagnosed after death. The disease – which is caused by repeated blows to the head – has been found in the brains of dozens of former National Football League (NFL) players.
In the first stage of the disease, some people also experience short-term memory problems, depression, aggressive tendencies, and executive function issues, according to the CTE Society, a nonprofit group.
In later stages, those problems grow stronger, and others, such as mood swings and suicidal thoughts, emerge. In its final stage, a person can experience severe cognition issues and memory loss, as well as dementia, according to the CTE Society.
Boston University’s CTE Center said the cause of suicide is complex and a postmortem CTE diagnosis is not known to be a risk factor for suicide.
But CTE researchers said the case showed not enough has been down to lower the risk of the disease for athletes.
“Mr Kneeland played in the modern era of concussion protocols and better helmets, and yet he still developed CTE,” said Dr Chris Nowinski, co-founder and CEO of the Concussion & CTE Foundation. “We have no reason to believe the current generation is at a lower risk of CTE than previous generations.”
