how did cory monteith die?
Why didnât rehab save Cory Monteith? When the Glee star died at 31 of a toxic mix of heroin and alcohol, he was just two months out of treatment for substance abuse. Post-rehab, the actor looked healthy and happy, attending a hockey game with his girlfriend, Lea Michele, dining out with friends and attending a photo call for the next season of his FOX hit.