The impact of smoking on lung cancer, can now say clearly that smoking is a cause of lung cancer the most important risk factors. The impact of smoking on lung cancer, died of lung cancer patients, 87% are from smoking, including passive smoking caused lung cancer mortality in male smokers are not smoking 8 to 20 times, while smoking and lung cancer was the occurrence of dose-response relationship, an analogy if the person smoking 25 a day, more than 20 years of continuous smoking, lung cancer incidence rate is 227 per million, if the daily smoking 15-24, That is down to 139 parts per million, a day to pumping 1-14, drop even lower, down to 75 parts per million. Deaths from lung cancer, 80% of the males has a relationship with smoking, 75% of female lung cancer in both relations. This conclusion is yes, but not our results in China, every country, more than 40 out of Epidemiology Research Center survey results.
U.S. medical researchers have recently published study reported that passive smoking is called "passive smoking" than previously known to the outside world more dangerous, a number of women living with smokers, the probability of lung cancer more than the common 6 times. Long-term passive exposure to tobacco smoke causes lung cancer is an important reason, according to incomplete statistics, China's about 1 / 3 of the family there are different levels of passive smoking, and in many offices, often cause a person smoking passive smoking around the crowd. Passive smoking will not only lead to bronchitis, asthma and other respiratory system diseases, but also the direct cause of many tumors. The existence of such a misunderstanding that many people that as long as not smoking will not affect their physical health, but did not think would therefore suffer from lung cancer. This shows an even greater risk of passive smoking, leading to higher chances of lung disease.
The following is information on the incomplete statistics from the results: in 1948, Dole and Hill observed from the London hospital where 649 men and 60 women died of lung cancer patients and cancer deaths the same number of non-smoking patients, side by side In addition to other possible factors. Their results showed that smokers die of lung cancer patients was significantly higher than the proportion of cancer deaths are smoking; heavy smokers (more than 25 per day) the possibility of lung cancer is 50 times the non-smokers . This suggests that smoking may be risk factors for lung cancer.
In 1950, Dole and Hill from 1951 on 34,439 male doctors and female doctors were 619 40-year longitudinal study. After a time, Dole, and Hill, an investigation of these doctors to record their habits, smoking and health. The investigation is still in progress until now. After 40 years in tracking found that the overall mortality rate of smokers is 2 times the non-smokers, and lung cancer mortality is 20 times the non-smokers. In 1993, about 20,000 doctors surveyed had died, of which 883 people died of lung cancer. If the number of their smoking and lung cancer incidence linked, then you can come to a startling conclusion, smoking 25 cigarettes a day, more people likely to get lung cancer than non-smokers 25 times.
In addition, the American Cancer Society also conducted two large-scale population tracking survey on the relationship between smoking and lung cancer. The first was from 1960 to 100 million adult men and women in the survey until 1972. The second is from 1982, 120 million adult men and women, the last until 1998. This is by far the largest population tracking research. The two large-scale survey found that, regardless of smoke a few cigarettes a day, male smokers, non-smokers of lung cancer mortality rates 21 times, and his wife, a non-smoker lung cancer mortality rate 12 times.
The impact of smoking on lung cancer, so smoking and passive smoking causes lung cancer risk factors. Therefore, in daily life, we have to be completely smoke-free environment conducive to physical health.
400
Oncology Hospital,