| We meet smokers everywhere: in the streets, on college campuses and in shops. The bad habit has seemly been a common social hobby for male or female since the beginning of the 20th century. There are about 1.2 billion smokers among the 6 billion people in the world. In some country the ratio may be higher. According to the research, in 2002, there were 71.5 million smokers, which made up 30 percent of the American population. This figure includes 3.8 million young people aged from 12 to 17 and 14 million from 18 to 25. What is worse is that about 3 million people die of the relevant disease derived from smoking every year all over the world. (www.nlm.nih.gov/smoking.html) |
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