After years of the N.F.L.'s disputing evidence that connected football to chronic traumatic encephalopathy (CTE), the degenerative brain disease found in nearly 100 former players, a top official for the league acknowledged this link for the first time. Also "more than 40 percent of retired National Football League players had signs of traumatic brain injury based on sensitive MRI scans called diffusion tensor imaging," according to a press release from the AAN. A concussion is temporary unconsciousness caused by a blow to the head. Next, it has been proven that there is a link between football and head injuries leading to brain damage. To conduct the latest study, researchers took brain scans of 40 retired NFL players while giving them
