1. Chapter 21 Lesson 3

2. Did You Know? Since many more people are becoming aware of the harmful effects of tobacco, movements to limit tobacco use in public places are gaining ground.

3. Risks for Smokers and Nonsmokers A. Both users and nonusers breathe environmental tobacco smoke (ETS), or secondhand smoke, which is air contaminated by tobacco smoke. B. Sidestream smoke, has high concentrations of carcinogens, nicotine, and tar. C. Mainstream smoke, or smoke exhaled from the lungs of a user, contains carcinogens, nicotine, and tar.

4. Effects of Smoke on Nonsmokers A. Smoke affects unborn children and infants. 1. Nicotine is passed through the placenta. 2. Carbon monoxide reduces the oxygen levels in the blood. 3. Tobacco can impair fetal growth, causing a miscarriage, low birth weight, and premature delivery. 4. Infants may suffer from growth and development problems throughout childhood.

5. Effects of Smoke on Nonsmokers B. Smoke affects young children. 1. Children of smokers have a higher percentage of sore throats, ear infection, and upper respiratory problems. 2. Children who live with smokers have double the risk of developing lung cancer.

6. Reducing Your Risks A. Politely ask visitors who smoke to refrain from smoking in your house or car. B. Use air cleaners or open the windows. C. Stay outside when visiting the home of a smoker.

7. Toward a Smoke-Free Society A. Many states have passed laws prohibiting use in public places. B. Laws prohibit the sale of tobacco to minors. C. Tobacco licenses can be revoked when stores sell tobacco to minors.

8. Working Toward National Health Goals A. The Department of Health and Human Services has launched Healthy People 2010 to promote health and prevent disease nationwide. B. By decreasing tobacco use and reducing exposure to secondhand smoke, individuals can increase their years of healthy life.