Another NFL player has been diagnosed posthumously with Chronic Traumatic Encephalopathy (CTE). Former Michigan State Spartan Charles "Bubba" Smith.

The New York Times reported Tuesday that the brain study at Boston University affiliated with the Department of Veterans Affairs and the Concussion Legacy foundation found that Smith was suffering from stage three CTE upon his death.

BU's research categorizes CTE from stages one to four. Stage three symptoms include cognitive impairment and problems with judgment and planning.

Smith died in 2011 from an overdose of a weight loss supplement, he also had heart disease and high blood pressure according to the Los Angeles Coroner. He was 66 when he died.

Smith was a two time all-american defensive end at Michigan State and was the #1 overall selection in the 1967 draft (the first draft of the "Common Draft Era"). He was a champion of Super Bowl V with the Baltimore Colts and played in over 100 NFL games.

After his NFL career, Smith enjoyed a career in acting from the mid 70s to the late 2000s.

Smith's diagnosis makes him the 90th different former NFL player to have traces of CTE in his brain found by the Boston University study.