What did J Edgar Hoover die of?

J. Edgar Hoover died on May 2, 1972 at the age of 77.

The official cause of J. Edgar Hoover's death is listed as a heart attack. The news reports the day after his death had indicated his death was due to the effects of high blood pressure. No autopsy...

No thank godAnd this is a man you should read up on, Scary

Anyone with any sense called him Mr. Hoover.

There is evidence that his grandfather was black.