Paul Reubens' Cause of Death: Respiratory Failure

Actor and comedian Paul Reubens, best known for his portrayal of Pee-wee Herman, died in July from acute hypoxic respiratory failure, with acute myelogenous leukemia listed as the underlying primary cause of death. Reubens had been privately battling cancer for years, including metastatic lung cancer. He had been working on a memoir before his passing.