At least one in four former NFL players who died between 2016 and 2021 had chronic traumatic encephalopathy (CTE) [1].
The findings highlight the long-term neurological risks associated with professional football and the potential for widespread brain degeneration among athletes.
Researchers at Mass General Brigham, Boston University, and the Concussion & CTE Foundation conducted the study in the U.S. [4, 5]. The team examined 215 of 878 former players [2]. Their analysis revealed that 24.5% of those examined had the degenerative brain disease at the time of death [1, 2].
CTE is a condition linked to repeated head trauma, which is common in the high-impact environment of professional football [1, 3]. The study focused on a specific window of deaths occurring between 2016 and 2021, with the results reported this month [4].
Researchers said that repeated head trauma likely contributed to the development of the disease [1, 3]. They also said that the actual number of affected players may be higher than the diagnosed figures suggest [1, 3].
The study utilized brain pathology to identify the presence of the disease. By analyzing a subset of the available former player population, the researchers aimed to determine the prevalence of CTE across different eras of the game. The findings suggest that the risk of brain degeneration remains a significant concern for those who played in the league during the studied period [4, 5].
“At least one in four former NFL players who died between 2016 and 2021 had CTE.”
This study provides quantitative evidence of the prevalence of CTE in former professional athletes, suggesting that the risk of permanent brain damage is a systemic issue rather than an isolated occurrence. By identifying a 24.5% prevalence rate in the sampled group, the research puts pressure on sports organizations to refine safety protocols and concussion management to protect current and future players from similar degenerative outcomes.
