There is strong evidence that suggests that people who smoke cigarettes on a regular basis for a long period of time are at an extremely high risk of developing larynx and lung cancer. Researchers are still trying to figure out exactly how it is that smoking causes these types of cancer, as it is not yet understood clearly.
Normal cells may be damaged, but they have the ability to repair themselves. In other cases, the cells are sloughed off and eliminated by the lymph system, then replaced by new ones. But this process can go awry.



















