BOSTON — Aaron Hernandez had a severe case ... Dr. Ann McKee, the director of the CTE Center at Boston University, said Hernandez had Stage 3 (out of 4) of the disease, which can cause violent ...

His family believed that the CTE diagnosis explained “a lot of things that Aaron did, including his supposed suicide,” his attorney, Jose Baez, told PEOPLE. As a result, the Hernandez family ...