Causes and risk Factors
CTE is primarily associated with contact sports, including:
American Football: The repeated blows to the head sustained by players, especially linemen and linebackers, increase the risk of developing CTE.
Ice Hockey: checks to the head and body can lead to concussions and subconcussive hits.
Soccer: Heading the ball can cause repeated head trauma.
Rugby: Full-contact tackles and collisions increase the risk.
Boxing and Mixed martial arts (MMA): Repeated blows to the head are inherent to these sports.