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A new study released today in the journal Brain explores the link between sub-concussive hits and chronic traumatic encephalopathy, or CTE.
CTE is a "progressive degenerative disease" which has been found in the brains of people who have experienced repetitive head trauma.
The new study focuses on four teenagers who had sustained head injuries one, two, 10 and 128 days prior to death. Of the four brains studied, one had early-stage CTE, and two others had an accumulation of Tau protein, which is associated with the development of CTE.