Former soccer players show brain changes but no cognitive decline, researchers find

A study by Imperial College London has revealed that retired British professional soccer players exhibit structural brain differences and elevated rates of anxiety and depression, yet show no signs of cognitive decline. The research, involving 142 former players aged between 30 and 60, compared them to 56 healthy individuals without a history of contact sports or concussions.

Researchers utilized questionnaires, cognitive tests, and structural MRI scans to assess cognition and regional grey matter volume. The findings indicate that while former players scored similarly to the control group on memory and thinking tests, they reported significantly higher instances of mental health struggles. Specifically, 31% met the threshold for clinical depression, compared to 9% in the control group, and 42% reported clinical anxiety versus 25%.

Brain scans of the former players showed reduced brain tissue in areas associated with memory and emotion. However, only a small percentage displayed severe brain shrinkage indicative of active neurodegeneration. The study, which has not yet been peer-reviewed, is part of a larger effort to identify repetitive head impacts as a potential modifiable risk factor for dementia. Researchers plan to monitor these players long-term to track neurological changes.

While the study did not establish a direct link to Alzheimer's disease, it contributes to the growing body of research on sports-related brain injuries. Unlike previous research often relying on post-mortem reports, this study follows athletes in mid-life, offering a more dynamic understanding of potential neurological effects from repetitive head trauma.

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The field is taking a more holistic view of brain health and dementia risk.