Abstract： The association between traumatic brain injury (TBI) and an increased risk of neurodegeneration has been recognized for some decades now (Faden and Loane,2015),with recent evidence suggesting that a history of TBI,either as repeated concussive/mild TBI insults typically experienced by some athletes or less commonly as a single moderate/severe injury,may be linked with an increased risk of developing a specific form of neurodegeneration known as chronic traumatic encephalopathy(CTE) (McKee et al.,2016).