Cancers of the stomach (gastric cancer) mainly occur in people over 40 years old. They are more common in people with poor diets and high alcohol and tobacco consumption, especially men. It is also more common in people of blood group A due to genetic factors.
In 2002 Stomach cancer caused 2.1% of deaths in people over 60 years old (table 5c), 1.7% of all deaths in rich territories and 3.1% of all deaths in poor territories with reasonable life expectancy. The incidence of stomach cancers has been falling in many rich territories over the past 50 years. It remains very high in Japan.
Cancers of the stomach caused 1.5% of all deaths worldwide in 2002, an average of 137 deaths per million people per year and 12% of all deaths from cancer.