‎Health Risks of Secondhand Smoke | Pregnancy.org
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Friday, October 11th, 2019 12:00 PM

Health Risks of Secondhand Smoke

Cigarettes can put nonsmokers at risk of serious health problems.


As if we needed more reasons why quitting smoking now is a terrific idea: When you go smoke-free, you have a dramatic impact on protecting your loved ones from diseases and health problems caused by secondhand smoke.


It might surprise you, but some people who never smoked themselves may become ill or even die from exposure to tobacco smoke. In fact, since the U.S. Surgeon General’s first report on smoking and health in 1964, 2.5 million adult nonsmokers have died because they breathed secondhand smoke.


There is no safe level of exposure to secondhand smoke. Breathing in smoke from a burning cigarette or breathed out by a smoker can cause serious disease.


Secondhand smoke causes approximately 7,300 lung cancer deaths each year in adult nonsmokers in the United States. The U.S. Surgeon General estimates that living with a smoker increases a nonsmoker’s chances of developing lung cancer by 20 to 30 percent.

Secondhand smoke increases nonsmokers’ risk of developing heart disease by 25 percent to 30 percent and causes nearly 34,000 premature deaths from heart disease in nonsmoking Americans every year.


Exposure increases the risk of stroke by up to 30 percent and causes more than 8,000 deaths from stroke annually.


Secondhand smoke is dangerous to infants and children, too. Smoking during pregnancy results in more than 1,000 infant deaths a year, for instance.


Infants exposed to secondhand smoke are at greater risk of sudden infant death syndrome. There are 250 harmful chemicals in secondhand smoke; some appear to affect the brain in ways that interfere with its regulation of infants’ breathing.


Children whose parents smoke get sick more often. They get more bronchitis, pneumonia and ear infections and have more severe and frequent asthma attacks.

There is also research suggesting secondhand smoke may increase the risk of breast cancer, nasal cancers in adults and the risk of leukemia, lymphoma, and brain tumors in children.


Over the next 50 years, an estimated 88 million Americans will be exposed to secondhand smoke.


Fortunately research is also mounting on successful strategies for quitting smoking and other forms of tobacco use. Your doctor can help you decide whether medication, support or other tactics are appropriate.


By Beth Hawkins, Contributing Writer


For more information, please visit Optum's Health Library


American College of Obstetricians and Gynecologists. Chapter 1, 4, 7. Your Pregnancy and Childbirth. 6th ed. Washington, DC: ACOG; 2015.
Health.gov. Chapter 7: Some additional considerations for adults. Accessed: June 15, 2016.
American College of Obstetricians and Gynecologists. Exercise during pregnancy. Accessed: June 15, 2016.
Centers for Disease Control and Prevention. Healthy pregnant or postpartum women. Accessed: June 15, 2016.

Last Updated: June 16, 2016


The information provided is for general informational purposes only and is not intended to be medical advice or a substitute for professional health care. You should consult an appropriate health care professional for your specific needs and to determine whether making a lifestyle change or decision based on this information is appropriate for you. Some treatments mentioned may not be covered by your health plan. Please refer to your benefit plan documents for information about coverage.

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