Every year there are nearly as many deaths worldwide as there were in World War II (around 60 million). Chairman Mao, Stalin, Hitler and Pol Pot may have been responsible at most for a total of 90 million deaths, and they were not narcissists.
Natural disasters such as the Haiti earthquake, the Indian Ocean tsunami, and Typhoon Ondoy have between them killed less than a million.
A third of deaths worldwide are due to heart / circulatory disease. A quarter are due to infections. An eighth are due to cancers. Smoking causes over 5 million deaths / year. Other lifestyle factors like poor nutrition or obesity are important. In the UK and the Philippines circulatory disease and cancer are the top two killers.
