There are several versions of what really killed Bruce Lee. This is the one that I believe. A baptist doctor that treated Lee in the hospital months before his death said that Lee was using hashish to ease the stress of movie making. This caused his brain to swell for which he was hospitalized and went down to 126 lbs before beginning to film the game of death movie. The doctor warned him that using hashish could kill him. He used it again and had fatal brain swelling which did kill him. The story put out about alergic reaction to a headache medicine, I believe to be false. They did not want the public to know about his addiction to hashish. Death was publicly declared misadventure.