National Cancer Institute
backindexnext
Science Behind the News Understanding Cancer
 
Cancer-cauing chemicals in tobacco smoke

Tobacco Use and Cancer

Among the various factors that can cause cancer, the prevalence of tobacco smoking represents the greatest public health hazard. Cigarette smoke contains more than two dozen different chemicals capable of causing cancer. Cigarette smoking is the main cause of lung cancer and contributes to many other kinds of cancer as well, including cancer of the mouth, larynx, esophagus, stomach, pancreas, kidney, and bladder. Current estimates suggest that smoking cigarettes is responsible for at least one out of every three cancer deaths, making it the largest single cause of death from cancer. Other forms of tobacco use also can cause cancer. For example, cigars, pipe smoke, and smokeless tobacco can cause cancers of the mouth.



 
page 1page 2page 3page 4page 5page 6page 7page 8page 9page 10page 11page 12page 13page 14page 15page 16page 17page 18page 19page 20page 21page 22page 23page 24page 25page 26page 27page 28page 29page 30page 31page 32page 33page 34page 35page 36page 37page 38page 39page 40page 41page 42page 43page 44page 45page 46page 47page 48page 49page 50page 51page 52page 53page 54page 55page 56page 57page 58page 59page 60page 61page 62