Tobacco smoke contains many carcinogens harmful substances that damage cells.
Over time, these cells can become cancerous. The more a person smokes, the higher the risk of getting cancer-not just lung cancer, but also cancers of the mouth, throat, esophagus, larynx, bladder, kidney, cervix, and pancreas . It is clear that thousands of lives could be saved each year if people did not smoke. For this reason, we strongly encourage smokers to quit. The risk of lung cancer begins decreasing slowly as soon as a person quits smoking .