What was the cause of death of Bruce Lee & Brandan Lee ?

Bruce is believed to be from a headache pill and a preexisting condition. Brandon died on set of the Crow from a gun shot wound, a prop guns round was incorrectly handled by prop dept with blank rounds.

Bruce death is believed to be from brain oedema(accumulation of excess fluid) resulting from an ingredient in pain killer he used to take.May be there are other causes thought also..

The fact that these two n human beings

Bruce died because of heart condition after over-exerting acting on a set. Brandon from a gunshot on a set after someone put in real bullets instead of blanks. Nobody was found at fault in either case though.