Writer and audio documentary maker Hana Walker-Brown’s new book, A Delicate Game, investigates the reasons for sport’s troubling relationship with CTE (chronic traumatic encephalopathy), a type of dementia caused by repeated injuries to the head. Walker-brown interviewed athletes including former rugby star Steve Thompson, 43, who has no memory of playing in the World Cup final in 2003, and the family of Jeff Astle, the former England football player who died at 59 from dementia caused – an inquest found – by decades of heading leather footballs. Host for this discussion is Joey D’Urso, Investigations Writer for The Athletic UK.

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