Smoking with lung cancer is closely related
Healthy lung is pink, and thoracic surgeons under scalpel smokers lung is black ash. The world through large-scale medical research, from the epidemiological point of view, irrefutable evidence of lung cancer caused by smoking is the culprit. 20 cigarettes a day, smoking more than 20 years of age, and the risk of death was lung cancer 20-fold increase; the probability of death for middle-aged smokers are 3 times the non-smokers.

Smoking with lung cancer is closely related
In fact, smokers get lung cancer not only increase the probability of suffering from coronary heart disease, high blood pressure, such as the probability of other diseases than non-smokers high. Smokers than non-smokers the incidence of lung cancer is higher, which is not in doubt. So why do many non-smokers have lung cancer? I think the first is a modern industrialized society of pollution, is a long-term stay in a smoke environment, so there are other food factors (such as eating moldy food), passive smoking, genetic and other factors, these factors can lead to non-smokers suffering from lung cancer. Passive smoking is particularly harmful to women and children. According to statistics, the number of female smokers to live together, the risk of lung cancer 6 times the big ordinary people
