The More Football You Played, The Greater Your Risk Of Memory And Mood Problems

It Wasn’t Just the NFL. Study Links Football At Every Level To Cognitive Complaints Later.

Most men who played football never made it to the NFL. They played under Friday night lights, or for a college program no one outside the region remembers, or just in a youth league on Saturday mornings. For years, research on football and brain damage focused almost entirely on professional athletes, leaving a quiet, unanswered question for everyone else. What did all those hits do to the players that never went pro?

A large new study offers one of the clearest looks yet at that question. The longer a man played football, and the higher the level he reached, the worse his memory test scores, mood, and everyday thinking tended to be in middle age and beyond. When researchers compared former players directly against men who had never experienced repeated head impacts, the differences showed up across the board: cognitive test scores, depression ratings, and self-reported struggles with daily thinking tasks. Published in JAMA Network Open, the findings draw on nearly 4,000 former players spanning youth leagues through the pros, one of the broadest samples ever assembled on this question.

Former Football Players Score Worse on Memory and Depression Tests

Researchers recruited 3,970 former male players through the Head Impact and Trauma Surveillance Study (HITSS), an online research program based at Boston University. Participants averaged about 56 years old and worked through a 90-minute battery of computerized cognitive tests and questionnaires covering mood, memory, and executive function, the mental processes behind planning, focusing, and keeping behavior in check.

A subset of 661 former players was then measured against 282 men who had never played contact sports or sustained other repeated head trauma. The two groups were matched by age, race, ethnicity, and education. Former players scored lower on a computerized memory test, reported more everyday cognitive struggles, and scored higher for depressive symptoms on the Geriatric Depression Scale, a standard clinical tool used to measure depression in older adults. The differences were statistically significant across multiple measures.

The More You Played, the Steeper the Toll

Within the broader group of nearly 4,000 players, each additional year of football was associated with more depression, more cognitive complaints, and more errors on a paired memory test. Players who reached the professional level fared the worst across nearly every measure, followed by college players, with high school and youth players showing the least impairment.

Former pros had more than double the odds of scoring in the clinically concerning range for depression compared to players who stopped at the high school or youth level. College players also showed elevated odds compared to high school players. That stair-step pattern, worsening at each successive level of play, held across cognitive and mood measures alike.

Position played made no difference. Linemen, long assumed to absorb the heaviest punishment, did not show worse outcomes than players at other positions. The age at which someone first started playing football was not significantly associated with later-life outcomes in this group. What drove the results was simpler: total time in the sport and how far a player climbed.

This Is Not Just an NFL Problem

That last point is worth sitting with. Most of what science knew about football and brain health before this study came from retired professionals, a tiny and atypical slice of everyone who has ever strapped on a helmet. High school players, who vastly outnumber the pros and are far more representative of American football culture, were largely absent from the research.

HITSS was designed to fix that. By enrolling players from every level of the sport, the study showed that measurable differences in memory test performance and mood are not exclusive to men who made careers out of football. High school and youth players sat at the less-impaired end of the spectrum, but they were still part of the pattern, and still compared unfavorably in some measures against men who never played at all.

“Because millions of US men have played tackle football,” the authors wrote, “understanding contributions of football exposure to brain health is crucial.”

The mental health piece of this story may be the most underappreciated. Depression in former athletes is often chalked up to the identity loss that follows retirement from sport. These data suggest something more physical may be at work, that repeated blows to the head over years of play could be reshaping brain function in ways that surface as depression decades later. That is speculative, and the study does not prove it. But the pattern is hard to ignore.

What It Means for Anyone Who Ever Played

For clinicians who treat aging men, the study offers a practical takeaway: two simple questions, how many years did you play and at what level, may help identify former players worth watching more closely for memory concerns or depression. Neither question requires a brain scan or a specialist referral.

There are limitations here. The comparison substudy sample was predominantly white and college-educated; roughly 85 percent of those 943 participants held at least a four-year degree, which does not reflect the full range of people who have played American football. Men who were already noticing symptoms may have been more motivated to enroll, which could skew results toward worse outcomes. And because researchers observed participants rather than randomly assigning anyone to play or skip football, direct cause-and-effect cannot be established. Other factors, including genetics, overall health, and socioeconomic stress, could be influencing the results.

Still, when a pattern shows up across thousands of former players and different measures of memory and mood, it becomes harder to wave away.

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Disclaimer: This article is based on observational research and is intended for informational purposes only. The findings reflect associations identified in a specific study population and should not be interpreted as a personal diagnosis or medical advice. Former players concerned about memory, mood, or cognitive changes are encouraged to speak with a qualified healthcare provider.

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