Hudson later returned to Austin, Texas where he lived with his second wife Lise, until his death there on June 25, 2013. He died from what was originally deemed Parkinson’s dementia, but since doctor's believed this had been caused by football-related trauma; his brain and spine were donated to researchers studying the relationship between head trauma and neurological disease at Boston University. They later defined the cause of death as traumatic dementia encephalophathy. He was 70 years old at the time of death.