Images of Brain Injuries in Athletes

A new study of 85 people who had a history of repeated mild head traumas found that 68 of them, nearly all of whom played sports, had evidence of chronic traumatic encephalopathy, a degenerative and incurable disease whose symptoms can include memory loss, depression and dementia. The photographs below, from seven of the athletes in the study, illustrate the deterioration of the brain that can be caused by C.T.E.