At least 25% of former NFL players who died between 2016 and 2021 suffered from chronic traumatic encephalopathy (CTE) [1].
The findings provide a population-based estimate of how repeated head impacts in professional football affect long-term brain health. This data is critical for understanding the risks associated with the sport and the prevalence of the disease across the league's alumni [1], [2].
Published in the British Medical Journal (BMJ), the study analyzed the brains of former players in the U.S. [1], [3]. Researchers said that one in four players in the studied cohort had the degenerative brain disease [1].
The research specifically examined deaths that occurred from 2016 through 2021 [2]. By focusing on this specific timeframe, the study aimed to provide a more accurate reflection of CTE prevalence than previous studies, which often relied on donated brains from families who already suspected the disease was present [1], [2].
CTE is a brain condition linked to repeated head trauma, which can lead to memory loss, mood swings, and cognitive decline. The BMJ study serves as a benchmark for the frequency of these impacts and their resulting damage among professional athletes [1], [2].
While the NFL has implemented various rule changes to reduce head contact, this data highlights the lasting impact of the game on players from previous eras [1], [3]. The results underscore a persistent link between professional football and permanent neurological damage [2].
“At least 25% of former NFL players who died between 2016 and 2021 suffered from chronic traumatic encephalopathy.”
This study shifts the conversation from anecdotal evidence to a population-based statistical model. By analyzing a broader set of deaths rather than relying on voluntary brain donations, the research suggests that CTE is a systemic issue within professional football rather than an isolated occurrence in a small subset of players.
