Tobacco is the chief culprit 80 percent of lung cancer

In recent years, the incidence of lung cancer, the mortality rate was obviously on the rise, has become China'slargest cancer prevention and control of the situation is extremely grim. The study confirmed that smoking and lungcancer closely related to about 80% of lung cancer caused by smoking. "Professor Zhou said.The incidence of smoking-related and environmentalZhou Qinghua said that statistics show that China in recent years, the incidence of lung cancer at an average annualrate of 5% of the rapid increase in the incidence of lung cancer for men at present, ranking first in the cancer deathrate of the first; female lung cancer incidence rate second only to breast cancer live Second cancer, the mortalityrate ranks first; in the whole population, lung cancer incidence and mortality rates of cancer were highest in ourcountry who died of cancer each year, more than 1 / 4 for patients with lung cancer. In addition, the incidence of lungcancer has also shown a very clear trend of a younger age. 20 years ago, its peak incidence in the 60-year-old, and nowit's 50-year-old crowd around the high-fat, high incidence of at least 10 years ahead of schedule. Clinical rare in thepast 40 years of age patients with lung cancer has become all too common, a rough estimate, now hospitalized patientswith lung cancer, 10% to 15% of such patients, and 20 years ago, the proportion was only 3% to 5%. Professor ZhouQinghua believe that the reason why the incidence of lung cancer in recent years has such a high-fat trend, with peopleliving environment and lifestyle changes, which lower the age to smoke, and smoking groups to expand and intensify airpollution factors such as the role of the most prominent.Smokers, only 10% to 15% of lung cancer, and about 10% to 15% of lung cancer patients do not smoke. This shows that notall smokers suffering from lung cancer, smoking is a significant increase in risk of lung cancer, as to whether or notthe ultimate cancer also individuals with genetic susceptibility to tobacco, and other internal factors.