How did Bruce Lee truly die?

I remember reading that he was allergic to aspirin. He would chew them often to deal with the pain he got while doing fight scenes. As I recall, this came from several sources, including his wife Linda.

Allergic reaction to a muscle relaxant was the apparent real cause of his death.

:.( Thanks you two.

I can only imagine what he would might have done should he have been alive today. I feel he might have changed the perception of the stereo types of Asian Americans. Obviously there are major strides today in that area but I cant help but think he might have done more dramas in his acting career later on.

He was fighting an expert more so than him. ‘the touch of death’ – hammer stroke to the heart

Your theory was close, according to the official Bruce Lee movie, he died of a heart attack. But according to Wiki, he did had problems with his brain;

“There was no visible external injury; however, according to autopsy reports, his brain had swollen considerably, from 1,400 to 1,575 grams. Lee was 32 years old. The only substance found during the autopsy was Equagesic. On 15 October 2005, Chow stated in an interview that Lee died from an allergic reaction to the muscle relaxant (meprobamate) in Equagesic, which he described as a common ingredient in painkillers. When the doctors announced Lee’s death officially, it was ruled a “death by misadventure”