Researcher: Hernandez's brain severely affected by CTE
Aaron Hernandez's helmet flew off as he collided with an opposing player. Those types of hits can cause not only concussions, but also subconcussive injuries.
Aaron Hernandez Had Developed Severe CTE by the Time of His Death
Tests reveal Aaron Hernandez had 'severe' CTE – Boston Herald
Tests reveal Aaron Hernandez had 'severe' CTE – Boston Herald
Aaron Hernandez's brain scan shows 'most severe case' of CTE for age; family suing NFL, Patriots
Researcher: Hernandez's brain severely affected by disease
Why It Matters That Aaron Hernandez Was Diagnosed With CTE
Aaron Hernandez had severe CTE; daughter sues NFL, New England Patriots – Pasadena Star News