1. Lung Cancer Slideshow Pictures
2. Effects of Secondhand Smoke Slideshow Pictures
3. Tips to Quit Smoking Slideshow Pictures

Tobacco smoking

• Tobacco smoking is the cause of lung cancer in as many as 90% of cases.



• A person who smokes is 13.3 times as likely to develop lung cancer as is a person who has never smoked. The risk also varies with the number of cigarettes smoked per day; people who smoke more than 20 cigarettes per day have a much greater risk of developing lung cancer than do those who smoke fewer than 20 cigarettes per day.



• Once a person quits smoking, the risk of lung cancer increases for the first 2 years and then gradually decreases, but the risk never returns to the same level as that of a person who has never smoked.



• Not all people who smoke develop lung cancer, and not all people with lung cancer smoke. Clearly, other factors, including genetic predisposition, also play a role.

• As many as 15% of lung cancer cases involving nonsmokers may be caused by secondhand smoke.



• The Environmental Protection Agency has recognized passive smoking as a potential cause of cancer.

• Asbestos exposure has been linked to lung cancer and other lung diseases.



• The silicate type of asbestos fiber is an important carcinogen.



• Asbestos exposure increases the risk of lung cancer by as much as 5 times.



• People who both smoke and have been exposed to asbestos are at an especially high risk of developing lung cancer.

• Radon is a gas produced as a result of uranium decay. Radon exposure is a risk factor for lung cancer in uranium miners.



• Radon exposure is believed to account for about 2-3% of lung cancers each year.



• Household exposure to radon has never been clearly shown to cause lung cancer.

• Petroleum-based chemicals called aromatic polycyclic hydrocarbons



• Beryllium



• Nickel



• Copper



• Chromium



• Cadmium



• Diesel exhaust

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