Ken Stabler suffered from Stage 3 CTE

Upon passing away last July due to complications from colon cancer, Ken Stabler donated his brain and spinal cord to Boston University's Chronic Traumatic Encephalopathy center.

It turns out that on a scale of 1 to 4, Stabler had high Stage 3 CTE, according to researchers at Boston University.

“He had moderately severe disease,” Dr. Ann McKee, chief of neuropathology at the V.A. Boston Healthcare System and a professor of neurology and pathology at Boston University School of Medicine, told John Branch of the New York Times. “Pretty classic. It may be surprising since he was a quarterback, but certainly the lesions were widespread, and they were quite severe, affecting many regions of the…