The Effects of Cigarette Smoking
In the U.S there has been a steeper rise of the people who got the lung cancer from smoking. Since 1950 percentage of all cigarettes filter cigarettes sold increased from 0.56 to 92% in 1980 and to 97% in 1990 (Blizzard, 2002). For lung cancer it was observed that non-filter smoker had more risk than filter smoker. The incidence of lung cancer of non-filter smoker was more than 50% higher than that of filter cigarette smokers (Rimington, 1981). So some reduction in lung cancer rates might be expected, because risk of lung cancer was reduced for smokers who switched to filter cigarettes. But recently many studies have not produced consistent results, and many people with the highest-age adjusted rates of cancer smoke filtered cigarettes (Blizzard, 2002).