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flag Repetitive head injuries in athletes cause lasting blood-brain barrier leaks, raising risks for brain diseases like CTE and Alzheimer’s, new research shows.

flag A new study links repetitive head injuries in athletes to a persistent leaky blood-brain barrier, even years after retiring from contact sports like rugby and boxing. flag Using advanced MRI scans and postmortem brain tissue, researchers found that barrier damage allows harmful substances into the brain, correlating with cognitive decline and increased risk of neurodegenerative diseases like CTE and Alzheimer’s. flag The findings suggest MRI scans could detect early warning signs, potentially enabling preventive interventions, and highlight the need for broader research and public health action, especially for young and amateur athletes.

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