Months after his death in September, former New York Giants safety Tyler Sash was diagnosed with chronic traumatic encephalopathy—a degenerative brain disease commonly known as CTE—by Boston University and the Concussion Legacy Foundation, according to the New York Times' Bill Pennington.
The examination of Sash's brain was conducted by Dr. Ann McKee of the Boston University School of Medicine, who said the safety's case of CTE was severe for a 27-year-old. Results of the study concluded Sash had level 2 CTE—on a 0-4 severity scale—and it may have contributed to his accidental overdose on pain medication.