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Contact-sport participation may not increase odds of CTE

Former NHL and NFL players didn't have brain abnormalities suggesting chronic traumatic encephalopathy or early-onset dementia and had similar neurometabolic, hemodynamic, functional and structural functioning on brain scans, compared with those who previously participated in noncontact sports, researchers reported in The Journal of Head Trauma Rehabilitation. Another study in the same journal showed similar functional or structural brain scan measures and brain tissue injuries between retired contact-sport players and retired noncontact-sport players.

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