Former NFL Players Face Higher Risk of Neurodegenerative Death, New Study Finds

Large Study Links Repetitive Head Impacts in Football to Increased Brain Disease Mortality

A new large-scale study has found that former National Football League (NFL) players experienced significantly higher rates of neurodegenerative disease mortality compared with the general population. The research suggests that repeated head impacts during professional football may contribute to increased risks of conditions such as dementia, amyotrophic lateral sclerosis (ALS), and Parkinson’s disease.

The study analyzed nearly 20,000 NFL players who participated in at least one regular or postseason game between 1960 and 2019. Researchers examined decades of health outcomes and compared mortality patterns with those of the general population.

The findings add to growing scientific evidence examining the long-term effects of repetitive head impacts (RHI), a concern affecting athletes in contact sports worldwide.

Key Findings From the NFL Neurodegenerative Mortality Study

Researchers identified 19,824 former NFL athletes and tracked more than 518,000 person-years of follow-up. Among nearly 2,000 recorded deaths, 178 were attributed to neurodegenerative diseases.

The study found that NFL players had:

• Nearly four times higher neurodegenerative mortality compared with the general population
• More than four times higher ALS mortality
• Nearly four times higher dementia mortality
• Nearly four times higher Parkinson’s disease mortality

However, the research also found that NFL players had lower overall mortality rates compared with the general population. They experienced fewer deaths from cancer, cardiovascular disease, injuries, suicide, and other causes.

This suggests that the overall health advantages associated with elite athletic selection may reduce risks from many diseases, but these benefits do not appear to eliminate the increased risk associated with brain degeneration.

Repetitive Head Impacts and Long-Term Brain Health

American football involves frequent collisions that can expose players to repeated impacts even when those impacts do not result in diagnosed concussions.

Researchers have increasingly studied repetitive head impacts because damage may accumulate over years and potentially contribute to changes in brain structure and function.

Previous research has connected repeated head trauma with conditions including:

• Chronic traumatic encephalopathy (CTE)
• Dementia-related disorders
• ALS
• Parkinson’s disease

The new study attempted to address limitations found in earlier research by using a larger group of players and official death records rather than relying mainly on interviews, selected brain donations, or retrospective reports.

Why This Study Is Different

Earlier studies investigating football and neurodegenerative disease faced challenges such as limited sample sizes and possible selection bias.

The latest research included every eligible NFL player in the selected period, creating one of the largest mortality studies involving professional football athletes.

Researchers compared NFL players with population data adjusted for:

• Age
• Sex
• Race
• Calendar year

This approach helped scientists determine whether the higher rates of neurodegenerative mortality could simply be explained by NFL players living longer due to their athletic backgrounds.

The analysis found that survival advantages among professional athletes explained only part of the difference. Even after accounting for these factors, NFL players still showed approximately three times higher neurodegenerative mortality risk.

Certain Player Groups Showed Higher Risk

The study also examined whether certain playing characteristics were associated with greater risk.

Players in speed positions, including running backs, wide receivers, defensive backs, and other non-lineman roles, showed higher neurodegenerative mortality compared with linemen.

Researchers suggested that speed positions may involve fewer but more powerful collisions because players often experience impacts at higher velocities.

Career length was also important. Players who spent five or more seasons in the NFL had higher neurodegenerative mortality compared with those who played fewer seasons.

This supports the possibility of a relationship between cumulative exposure to head impacts and long-term brain health risks.

Younger Former Players Also Showed Concerning Patterns

One notable finding was the increased risk among players who died before age 60.

The study reported particularly elevated ALS and dementia mortality among younger former players compared with age-matched population data.

Researchers noted that neurodegenerative diseases often develop later in life, making early deaths from these conditions especially significant.

However, the authors emphasized that more research is needed to understand exactly when symptoms begin and how brain changes progress over time.

What the Findings Mean for Player Safety

The researchers stated that the findings support efforts to reduce repetitive head impacts in football.

Possible prevention strategies include:

• Improving tackling techniques
• Reducing unnecessary contact during training
• Strengthening concussion management
• Expanding long-term medical monitoring for former players
• Supporting research into early detection and treatment

The study also highlights the importance of focusing on overall health. Researchers recommend addressing factors that may influence brain aging, including cardiovascular health, physical activity, mental health, and metabolic conditions.

Limitations of the Research

Although the study provides important evidence, researchers noted several limitations.

Death certificate records may not capture every case of neurodegenerative disease accurately. Conditions such as chronic traumatic encephalopathy are also difficult to measure because they are usually confirmed through specialized brain examination after death.

The study included male NFL players and may not represent all football athletes, youth players, or athletes in other sports.

Additionally, researchers could not measure every individual player’s exact number of head impacts, genetics, lifestyle factors, or medical history.

Conclusion: New Evidence Highlights Need for Brain Health Protection in Football

The latest research provides strong evidence that former NFL players experience higher neurodegenerative mortality compared with the general population.

While professional athletes often benefit from better overall physical health and lower risks from many diseases, the long-term effects of repetitive head impacts remain a serious concern.

The findings reinforce the importance of reducing unnecessary head impacts, improving athlete protection, and continuing research into prevention and treatment strategies for neurodegenerative diseases.

Understanding the connection between football and brain health can help create safer environments for current players while improving care for former athletes.

Sources

Luster C, Abdolmohammadi B, Mastrodicasa M et al.Neurodegenerative mortality among National Football League Players, eClinicalMedicine, 2026; 0

Disclaimer

This article is for informational and educational purposes only. It does not provide medical advice, diagnosis, or treatment recommendations. Research findings may change as additional studies become available. Individuals concerned about brain health, sports injuries, or neurological symptoms should consult a qualified healthcare professional.