Is smoking really responsible for different cancers?
Yes, it is. In addition to nicotine, cigarette smoke contains more than 40 carcinogenic chemicals, which are involved in the development of different types of cancer. Tobacco-induced cancers account for about 1/3 of all cancers currently diagnosed in the United States. In more than 80 percent of all cases, lung cancer is caused entirely by smoking. Tobacco smoke is also a key trigger of pancreatic, oesophageal, kidney, mouth, and uterine cervical cancers.
