Learn about health risks faced by football players and write down your responses to evidence that football may be unsafe for children, in this interactive lesson featuring media from FRONTLINE: League of Denial. The lesson focuses on chronic traumatic encephalopathy, or CTE, and uses text and video to detail the symptoms of the disease, whom it affects, its suspected causes, whether it can be linked definitively to playing football, and whether it is safe for young children to play the game. For background, watch Introduction to CTE and review How CTE Affects the Brain. This resource is part of the FRONTLINE Collection.