After his death, his brain was removed and sent for analysis. FYI Stabler died of colon cancer. Read the complete article here > http://goo.gl/Y8aGhp N.F.L. Great Ken Stabler Had Brain Disease C.T.E. By JOHN BRANCHFEB. 3, 2016 Shortly before he died last July, the former N.F.L. quarterback Ken Stabler was rushed away by doctors, desperate to save him, in a Mississippi hospital. His longtime partner followed the scrum to the elevator, holding his hand. She told him that she loved him. Stabler said that he loved her, too. “I turned my head to wipe the tears away,” his partner, Kim Bush, said recently. “And when I looked back, he looked me dead in the eye and said, ‘I’m tired.’ ” They were the last words anyone in Stabler’s family heard him speak. “I knew that was it,” Bush said. “I knew that he had gone the distance. Because Kenny Stabler was never tired.” Stabler had high Stage 3 chronic traumatic encephalopathy, or C.T.E., the degenerative brain disease believed to be caused by repeated blows to the head, according to researchers at Boston University. The relationship between blows to the head and brain degeneration is still poorly understood, and some experts caution that other factors, like unrelated mood problems or dementia, might contribute to symptoms experienced by those later found to have had C.T.E.