My father in law (who lived in Brazil) was found dead on friday lying in his bed. He was 70 years old, full of energy, and otherwise healthy (non-smoker). He did mention he had "trouble with his circulation" and did not see a doctor regularly. He was found with blood on both corners of his mouth. Due to money an autopsy was never performed, (things can be backwards in Brazil). What could be his possible cause of death (heart attack, pulmonary embolism, enueurysm?). Our family would like to know.