Steven Stellman - Lung cancer risk is proportional to cigarette tar yield: evidence from a prospective study

Document created by Steven Stellman on Dec 1, 2016
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  Stellman, S. D., Garfinkel, L. 18 (4) 518-25-

  Abstract: The age-adjusted risk for lung cancer   among over 120,000 male current cigarette smokers in the American   Cancer Society's 1959-1972 prospective study was analyzed   according to tar yield and quantity smoked per day. At each   quantity level, the risk increased with increasing tar yield, and   at each tar level, the risk increased with numbers of cigarettes   smoked daily. The risks in smokers of cigarettes with the lowest   yields, however, far exceeded those of former smokers and   nonsmokers. The excess lung cancer risk for current smokers was   directly proportional to the estimated total milligrams of tar   consumed daily: SMR = 100 + 1.731 x milligrams tar per day. Tar   yields today are much lower than they were at the time of this   study and presage an eventual reduction (but not elimination) of   lung cancer risk for those who continue to smoke cigarettes,   especially among lifetime smokers of low-tar cigarettes.

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