Incentives   Prevalence of Smoking in U.S. by Race and Ethnicity*   * Hispanics can be of any race Source: American Lung Association Quitting smoking means your breath smells better, your cough goes away, you save money, and it cuts the risk of lung cancer and many other illnesses. 4 million people worldwide die each year from tobacco-related illnesses; that figure is expected to rise to 10 million by the 2020s 430,700 Americans die each year from smoking-related diseases 87 percent of lung cancer cases are directly caused by smoking More than 1 million children and teen-agers start smoking each year in the United States; 90 percent of all new smokers are 18 or younger 3,000 lung cancer deaths among nonsmokers in the United States are attributed to second-hand smoke Only 30 percent of women who smoke stop smoking when they find out they're pregnant; smoking during pregnancy accounts for 20 to 30 percent of low-birth weight babies, up to 14 percent of preterm deliveries, and about 10 percent of all infant deaths