Lung Cancer

Frequently Asked Questions

11. Can second-hand smoke cause a non-smoker to get lung cancer?

Some studies suggest that non-smokers who are exposed to environmental tobacco smoke, also called secondhand smoke, are at increased risk of lung cancer. Secondhand smoke is the smoke that non-smokers are exposed to when they share air space with someone who is smoking. Tobacco smoke contains more than 7,000 chemicals, including hundreds that are toxic and about 70 that can cause cancer. Since 1964, approximately 2,500,000 nonsmokers have died from health problems caused by exposure to secondhand smoke.

Learn more about the effects of secondhand smoke.

Learn more about the chemicals found in cigarettes.