You don't have to be a smoker for smoking to harm you. You can also have health problems from breathing in other people's smoke. Secondhand smoke is the combination of smoke that comes from the burning end of a cigarette, cigar or pipe and the smoke exhaled by the smoker. Secondhand smoke contains more than 50 substances that can cause cancer. Health effects of exposure to secondhand smoke include lung cancer, nasal sinus cancer, respiratory tract infections and heart disease.
There is no safe amount of secondhand smoke. Children, pregnant women, older people and people with heart or breathing problems should be especially careful.
National Cancer Institute
Also available in Spanish
Basics | Learn More | Multimedia & Cool Tools |
---|---|---|
|
||
Research | Reference Shelf | For You |
Also available in Spanish
Also available in Spanish
Also available in Spanish
References and abstracts from MEDLINE/PubMed (National Library of Medicine)
Home | Health Topics | Drugs & Supplements | Encyclopedia | Dictionary | News | Directories | Other Resources | |
Disclaimers | Copyright | Privacy | Accessibility | Quality Guidelines U.S. National Library of Medicine, 8600 Rockville Pike, Bethesda, MD 20894 National Institutes of Health | Department of Health & Human Services |
Date last updated: 05 January 2009 Topic last reviewed: 12 January 2009 |