Three or more college football concussions linked to poorer mental health after graduation

Former varsity players with a history of at least three concussions reported more depressive symptoms and poorer overall wellbeing soon after leaving college sport, although the study does not establish cause and effect.

Former college football players who had suffered three or more concussions were more likely to report poorer mental and cognitive health soon after graduation, according to research from the NCAA-Department of Defense Concussion Assessment, Research and Education Consortium.

The study, which tracked 627 former varsity players from 26 universities, focused on a transitional period that is often overlooked in concussion research: the years immediately after athletes leave college sport and begin adjusting to work and adult life. Researchers followed players recruited between 2014 and 2020 and collected post-graduation questionnaires from 2018 to 2021, when participants were an average age of 25. The authors said this window may be especially important because it captures former athletes before the long retirement period in which later health effects are often studied.

In the unadjusted results, players with at least three lifetime concussions reported worse averages across all four measures examined: perceived cognitive quality of life, depressive symptoms, general mental health and life satisfaction. After statistical adjustment, the clearest association was with depression. The three-or-more-concussion group scored higher on the PHQ-9, a standard depression screening tool, and also recorded lower scores on a general mental health measure, although that latter link did not hold up after correction for multiple comparisons. Life satisfaction did not differ significantly between concussion groups.

The findings add to a broader body of evidence that repeated head injuries may carry lasting consequences. A 1999 study in the Journal of the American Medical Association reported that college football players with multiple concussions faced a higher risk of long-term neuropsychological problems, including difficulties with memory and information processing. Later work has pointed in the same direction. A 2018 study in the American Journal of Sports Medicine found that former college players with multiple concussions reported worse physical and mental health roughly 15 years after their careers ended, while more recent research has continued to link repeated concussions with poorer outcomes after sport.

The new analysis also found that years spent playing football were not linked to any of the health outcomes measured, suggesting that concussion history may be more informative than total time in the sport when identifying athletes who could need support. Position played showed some differences, but those results were less consistent. Line players tended to report more depressive symptoms than special-teams players, and the researchers noted that the practical importance of one small interaction effect was probably limited.

The authors stressed that the study does not prove concussions caused the reported symptoms. Because both concussion counts and health outcomes were self-reported, the findings may be affected by recall bias, and some players with poorer health may have been more likely to take part in follow-up. Still, the researchers argued that a history of three or more concussions could help flag former collegiate players who may benefit from screening and monitoring as they move out of organised sport. The study’s implications are limited to recently retired college football players, but within that group it points to a measurable link between repeated concussion exposure and worse self-reported well-being.