The leading causes of death in the United States in 2002 were heart disease (710,000 deaths), cancer (552,000 deaths), and cerebrovascular disease such as stroke (166,000 deaths). These three causes accounted for over 30% of all deaths from heart disease, nearly 25% from cancer, and around 7% from cerebrovascular disease. The percentages of deaths from these causes varied significantly by age group, with heart disease and cancer being the top two causes of death for those over age 45.