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. Each year, about 3,000 non-smoking adults die of lung cancer as a result of breathing secondhand smoke.
