当然是统计啊。烟油中致癌物质不少吧
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2016-03-30 17:31:41
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Smoking-Attributable Lung Cancer
- Smoking, a main cause of small cell and non-small cell lung cancer, contributes to 80 percent and 90 percent of lung cancer deaths in women and men, respectively. Men who smoke are 23 times more likely to develop lung cancer. Women are 13 times more likely, compared to never smokers. 8
- Between 2005 and 2010, an average of 130,659 Americans (74,300 men and 56,359 women) died of smoking-attributable lung cancer each year. Exposure to secondhand smoke causes approximately 7,330 lung cancer deaths among nonsmokers every year. 9
- Nonsmokers have a 20 to 30 percent greater chance of developing lung cancer if they are exposed to secondhand smoke at home or work. 10
Other Causes
- It has been estimated that active smoking is responsible for close to 90 percent of lung cancer cases; radon causes 10 percent, occupational exposures to carcinogens account for approximately 9 to 15 percent and outdoor air pollution 1 to 2 percent. Because of the interactions between exposures, the combined attributable risk for lung cancer can exceed 100 percent. 11
- Exposure to radon is estimated to be the second-leading cause of lung cancer, accounting for an estimated 21,000 lung cancer deaths each year (range of 8,000 to 45,000). Radon is a tasteless, colorless and odorless gas that is produced by decaying uranium and occurs naturally in soil and rock. The majority of these deaths occur among smokers since there is a greater risk for lung cancer when smokers also are exposed to radon. 12
- Lung cancer can also be caused by occupational exposures, including asbestos, uranium and coke (an important fuel in the manufacture of iron in smelters, blast furnaces and foundries). The combination of asbestos exposure and smoking greatly increases the risk of developing lung cancer. 13
- Nonsmoking asbestos workers are five times more likely to develop lung cancer than nonsmokers not exposed to asbestos; if they also smoke, the risk factor jumps to 50 or higher. 11Environmental exposures also can increase the risk of lung cancer death. 14
