Why will the women who don't smoke cigarette also suffer from lung cancer

Our country overwhelming majority the women don't smoke cigarette, the occurrence of the lung cancer in addition to with passive smoke cigarette relevant, also have something to do with the coal smoke, soot of the indoor air pollution.That county village Yunnan declares that the Wei county is an our country lung cancer Gao Fa Qu, women lung cancer outbreak's leading is higher than a man, discovering through the survey the county's weather is damp, cold, the local residents have indoors to keep a Tan fire habit, the tradition habitually doesn't establish chimney row smoke, the coal smoke is indoors through long don't spread.The women mainly hold to run a household a duty, is harmed by coal smoke poison is higher than a man.The female lung cancer outbreak of the grounds, such as Shanghai and Guangzhou...etc. leads arrestive, but mostly the female don't smoke cigarette.Confirms through the Epidemiology survey mainly to is that the kitchen is bad-ventilated, bituminous coal stove the coal smoke floods, while cooking again soot Qiang person.The benzene in the coal smoke combines Bi, under the oil heat of crack solution the outcome all has a stronger cancer-causing function, so the indoor annulet territory(the output carcinogen in the passive smoke cigarette, fuel combustion and cooking process) doesn't smoke cigarette the important factor that the women suffer from lung cancer.