Playing tackle football before age 12 linked to neurological

Youth Tackle Football Linked to Earlier Onset of Cognitive and Emotional Symptoms in Athletes Diagnosed with CTE After Death

Study finds no ties between youth tackle football, brain or behavioral issues

Playing Tackle Football Before Age 12 Linked To Neurologic Problems Later In Life, Study Finds

Playing Youth Tackle Football Is Linked to Brain Disease Symptoms

Safety Considerations for Youth Football

Report: CTE, brain diseases can start sooner if tackle football is played before age 12

Truth About Concussions, High School Football, CTE

California Is the Fourth State in a Month to Propose Banning Youth Tackle Football – Mother Jones

Duerson Act' Would Ban Tackle Football for Illinois Kids Under Age 12, Chicago News

Football Player Had 'Worst' Brain Trauma Seen in Someone So Young, Doctor Says

Playing tackle football before 12 impacts brain health