Environmental Tobacco Smoke

What Environmental Tobacco Smoke Means

Environmental Tobacco Smoke (ETS), also known as secondhand smoke or passive smoke, is the smoke that comes from burning tobacco products like cigarettes, cigars, or pipes, combined with the smoke exhaled by smokers. People who do not smoke can breathe in this smoke without choosing to, which is why it is often called involuntary or passive smoking. ETS contains many harmful chemicals, including about 70 that are known to cause cancer. This smoke can be found in places where people smoke, such as homes, workplaces, bars, and restaurants.

Why Environmental Tobacco Smoke Matters in Cancer Care

Exposure to ETS increases the risk of developing lung cancer in people who do not smoke. It may also increase the risk of other cancers, such as breast cancer in younger women and certain cancers in children, though more research is needed to confirm these links. Besides cancer, breathing in secondhand smoke can harm the heart and lungs, increasing the risk of heart disease and causing irritation in the airways. Because of these risks, reducing exposure to ETS is an important part of protecting health, especially for people with cancer or those at higher risk.

What Patients Might See or Hear About Environmental Tobacco Smoke

You might hear your healthcare team mention ETS or secondhand smoke when discussing risk factors for cancer or other health problems. It may also come up in reports about your environment or lifestyle, or when doctors talk about ways to reduce health risks. Sometimes, tests can measure exposure to ETS by checking for chemicals like cotinine in blood, saliva, or urine. If you see terms like ETS, secondhand smoke, or passive smoking in your medical information, it refers to this involuntary exposure to tobacco smoke.

Common Confusions and Related Terms

The terms Environmental Tobacco Smoke, secondhand smoke, passive smoking, and involuntary smoking all refer to the same concept of breathing in smoke from others’ tobacco use. Sidestream smoke is the smoke from the burning tobacco product itself, while mainstream smoke is the smoke a smoker breathes out. The U.S. Surgeon General prefers the term "secondhand smoke" because it highlights that the exposure is involuntary. Understanding these terms can help you better follow discussions about your health and risks.

How to Use This Information and Next Steps

This information is meant to help you understand what Environmental Tobacco Smoke is and why it matters for health. It does not replace advice from your healthcare team. If you have questions about how ETS exposure might affect you or your family, or how to reduce exposure, ask your care providers. They can offer guidance tailored to your situation. Avoiding places where smoking occurs and encouraging smoke-free environments at home and work are practical steps to lower your risk. Remember, this entry is educational and not a diagnosis or treatment recommendation. Always discuss your concerns and test results with your healthcare team to understand what they mean for you personally.