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Former football player and wrestler Chris Nowinski's quest to publicize recent findings about the often dire consequences of head concussions sustained by athletes in contact sports — injuries that have previously been considered momentary setbacks and ignored in the name of toughness and dedication to the team.

Director : Steve James

Writer :

Cast

Christopher Nowinski

Alan Schwarz

Keith Primeau

Robert Cantu, MD

Ann McKee

Isaiah Kacyvenski