作者Cokeophilia

"Statistical evidence is most compelling: 87% of lung carcinomas occur in active smokers or those who stopped recently."
"Compared with nonsmokers, average smokers of cigarettes have a 10-fold greater risk of developing lung cancer, and heavy smokers (more than 40 cigarettes per day for several years) have a 60-fold greater risk."
"Epidemiologic studies also show an association between cigarette smoking and carcinoma of the mouth, pharynx, larynx, esophagus, pancreas, uterine
cervix, kidney and urinary bladder......Each year, about 3000 non-smoking
adults die of lung cancer as a result of breathing secondhand smoke.<Respiratory Health Effects of Passive Smoking:Lung Cancer and Other Disorders. Washington DC: ...