At the 1975 San Diego Comic-Con convention, Lee's friend Chuck Norris attributed his death to a reaction to the combination of the muscle-relaxant medication he had been taking since 1968 for a ruptured disc in his back and an "antibiotic" he was given for his headache on the night of his death. In a 2017 episode of the Reelz TV series "", forensic pathologist Dr. Michael Hunter theorized that Lee died of adrenal crisis brought on by the overuse of cortisone, which Lee had been taking since injuring his back in a 1970 weightlifting mishap. Hunter believes that Lee's exceptionally strong "drive and ambition" played a fundamental role in the martial artist's ultimate demise.