What Is cancer Cancer is the most virulent disease and soon becoming the leading cause of death worldwide: as many as ca. 1 in 3 individuals develop cancer and 1 in 4 will die of it Percentage of all deaths due to five leading causes of death by year United States 1935-2010) All other causes Stroke Accidents(unintentional injuries) Influenza and pneumonia Certain diseases of early infancy Kidney disease Heart disease Chronic lower respiratory diseases 100 it 9351940 1970 1980 990 2000 NOTE: 2010 data are preliminary SOURCE: CDC/NCHS, National Vital Statistics System, Mortality http://www.cdc.gov/nchs/data/databriefs/db88.htm◼ Cancer is the most virulent disease and soon becoming the leading cause of death worldwide: as many as ca. 1 in 3 individuals develop cancer and 1 in 4 will die of it. 1. What Is Cancer? (Percentage of all deaths due to five leading causes of death by year: United States, 1935–2010.) http://www.cdc.gov/nchs/data/databriefs/db88.htm