In the United States, cigarette consumption has increased from almost 42% of the population in 1965 to almost 19% among adults in 2011. However, smoking remains the form the most common. of tobacco consumed in the United States, approximately 43.8 million adults smoke cigarettes. Nearly 22% of men and 17% of women smoked cigarettes in 2011. Education is closely linked to smoking rates. People with higher education have lower smoking rates. As a result, more people smoke in the Midwest, about 22 percent, and fewer in the West, about 15 percent, because education levels are higher in the West, where the major cities are located. Figure 8, next page, shows annual cigarette consumption per capita worldwide and identifies the different levels. Although smoking is the most commonly consumed form of tobacco, it is not limited to cigarettes. Other forms of tobacco are also common around the world. A survey by the U.S. Substance Abuse and Mental Health Administration in 2010 found that 8.9 million people used smokeless or spit tobacco, 13.2 million cigars, and 2.2 million people smoked tobacco. tobacco in the pipe. Worldwide, approximately 852 million people use tobacco in its various forms. This represents 41% of the world's male population and only 5% of the female population. Additionally, China and India both have the largest populations of tobacco smokers, with 301 million and 275 million smokers, respectively. Tobacco and young people: Tobacco, in all its forms, is widespread among young people. According to government surveys, although smoking, snuffing, chewing and spitting tobacco are common among most adolescents, these practices are more common among young men. Figure 9 breaks down the percentage...... middle of paper ......graph. As a result, by damaging the lungs and destroying some of their functions, smoking causes what is known as smoker's cough. . This “smoker’s cough” eliminates mucus and irritants present in the lungs. This results from the lagging of the eyelashes as smoking tobacco destroys them, which is used to remove harmful materials from the lungs. The effect of smoking on cilia is shown in Figure 15. Some smoke particles remain in the lungs and mucus remains in the airways; therefore, when the smoker coughs, all irritable particles are cleared from the lungs. A smoker's cough also removes toxins and tars from the lungs and is therefore considered a defense mechanism as it does the work of the cilia..