Demaryius Thomas, a four-time All-Pro receiver with the Denver Broncos, died of complications from seizures, the medical examiner in Fulton County, Ga., said Sunday.
Thomas died Dec. 9 at his home in Roswell, Ga., less than six months after he retired from the N.F.L. He was 33.
In July, doctors at Boston University who examined Thomas’s brain found that he had C.T.E., or chronic traumatic encephalopathy, the degenerative brain disease associated with repeated head hits. The disease, which can only be posthumously diagnosed, does not cause death. Doctors said they believed Thomas’s seizures were brought on by a 2019 car crash in which his head cracked the windshield and a hydraulic rescue tool was needed to remove him from the vehicle.