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The commissioner of the Canadian Football League again on Wednesday resisted the idea of acknowledging any link between playing that sport and the risk of brain disease.

“What scientists are telling us is, yes, there have been hockey players and football players that have been diagnosed with CTE. That is a fact,” Randy Ambrosie told the House of Commons Subcommittee on Sports-Related Concussions, referring to the degenerative condition chronic traumatic encephalopathy, which can only be diagnosed in post mortem examinations.

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“But there are thousands and thousands and thousands of football players and hockey players that have played the game without having CTE.”

Continuing his response to a question from southwestern Ontario NDP MP Cheryl Hardcastle, Ambrosie also cited a study by Toronto researcher Dr. Lili-Naz Hazrat, who found signs of CTE in a woman who, according to her family, had neither played sports, nor had any concussion.