# NFL player neurodegenerative disease risks

> Live situation record from CLSTR: https://clstr.news/situations/nfl-player-neurodegenerative-disease-risks
> Updated: 2026-08-25T10:35:01.000Z. Sources: 22. Developments: 2.

Research has increasingly highlighted the neurological health risks faced by former NFL players. An initial study in Clinical Medicine indicated that while former athletes may live longer than the average person and face lower risks for cancer or heart disease, they face an unexpectedly high risk of death from neurodegenerative diseases. This follows high-profile diagnoses of conditions such as amyotrophic lateral sclerosis (ALS) and vascular dementia among former players.

Subsequent findings published in The BMJ provided more specific data regarding Chronic Traumatic Encephalopathy (CTE), stating that at least 24.5 percent of former NFL players who died between 2016 and 2021 had the condition. Researchers from institutions including Mass General Brigham and Boston University analyzed 878 deceased players, finding CTE in 215 of them. Experts warn the actual prevalence may be significantly higher, noting that 643 brains from the study group were never examined post-mortem. If these proportions are applied to the 1,696 players currently under contract, it is estimated that at least 400 active players could develop the condition.

Lead researcher Dr. Daniel Daneshvar noted that while the NFL faces scrutiny, many of the cumulative head impacts contributing to CTE occur at the collegiate, high school, and youth levels. Former officials from the Occupational Safety and Health Administration (OSHA) have characterized these rates as “astoundingly high,” “apocalyptically high,” and “unprecedented.” In response, the NFL stated its commitment to player well-being and safety through concussion reduction strategies, while the NFL Players Association described the research as a “sobering reminder” of the long-term risks to players and their families.

## Claims

- At least 24.5% of former NFL players who died between 2016 and 2021 had chronic traumatic encephalopathy (CTE). (corroborated by 15 sources)
- The study analyzed 878 former NFL players who died between 2016 and 2021. (corroborated by 15 sources)
- The NFL states it is working to make football safer through strategies to reduce concussions and head impacts. (corroborated by 4 sources)
- The maximum possible prevalence of CTE among the studied group could be as high as 97.7% or 98.7%. (corroborated by 3 sources)
- Applying the study's proportions to the 1,696 currently active NFL players suggests at least 400 could develop CTE. (corroborated by 3 sources)
- Most head impacts leading to CTE occurred at the collegiate, high school, or youth levels rather than the professional level. (single source)

## Timeline

### 2026-08-25: NFL players face high CTE risk in new study

A study in The BMJ finds that at least 24.5% of former NFL players who died between 2016 and 2021 had CTE, with potential prevalence rates reaching as high as 98.7%.

20 sources. https://clstr.news/cluster/nfl-health-risks-highlighted-by-cte-study-and-media-partnership-talks

### 2026-08-17: NFL players face increased risk of neurodegenerative disease death

A study in Clinical Medicine reveals that NFL players face a higher risk of death from neurodegenerative diseases, including ALS and vascular dementia, despite generally longer lifespans.

2 sources. https://clstr.news/cluster/nfl-players-face-increased-risk-of-neurodegenerative-disease-death

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Cite as: NFL player neurodegenerative disease risks. CLSTR, https://clstr.news/situations/nfl-player-neurodegenerative-disease-risks