NFL Headquarters Shooter Diagnosed with CTE, Medical Examiner Confirms

A man who killed four people in a Manhattan office shooting was found to have low-stage CTE, a degenerative brain disease linked to head trauma, which he believed contributed to his actions. The shooter, Shane Tamura, blamed the NFL for hiding the dangers of brain injuries from football, and had a history of mental health issues. The medical examiner confirmed the presence of CTE, which affects behavior and impulse control, though causality remains complex.