Smoking and Lung Cancer: An Overview

摘要: This position paper summarizes the overwhelming evidence that tobacco smoking is cause of 30 to 40% deaths from cancer. The focus on lung cancer because sheer magnitude this disease in males and likelihood a similar epidemic females. There are two categories indicate be major human Without exception, epidemiological studies have demonstrated consistent association between men now suggest women. Chemical analyses cigarette smoke reveal multitude known mutagens carcinogens. Moreover, these chemicals absorbed, metabolized, demonstrable genetic changes smokers. Two consequences evaluated. results treatment not encouraging; despite vigorous therapy, 5-year survival rate remains less than 10%. social economic costs habit impinge productiveness our society.