Profootballchase - Former NFL WR Demaryius Thomas had Stage 2 CTE when he died at 33, per @christophernowinski. Thomas struggled with erratic behavior, memory loss, and paranoia.
NFL Players Describe Fear, Suicidal Thoughts As Former Teammates Die - Sports Illustrated
Demaryius Thomas: Parents of late Super Bowl champion reveal he suffered from Stage 2 CTE - ABC30 Fresno
Demaryius Thomas - Wikipedia
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NFL star Demaryius Thomas had degenerative brain disease CTE when he died aged just 33
Football Players Diagnosed with CTE, the Brain Disease