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吸烟不仅危害吸烟者本身的健康,还会因为非吸烟者被动吸入大量的烟草烟雾而危害其健康,更让人心惊的是,吸二手烟的危害几乎等同于吸烟。吸烟可产生40多种致癌物质,其中与肺癌关系密切的主要有多环芳烃类化合物、苯、砷、丙烯、烟碱(尼古丁)、一氧化碳和烟焦油等,这些致癌物质可通过不同的机制,导致支气管上皮细胞DNA损害,某些癌基因的激活,抑癌基因的突变和失活,导致细胞遗传信息转化癌变,
Smoking not only endangers smokers’ own health, but also endangers their health because non-smokers passively inhale a large amount of tobacco smoke. What is more alarming is that the harm of smoking secondhand smoke is almost the same as that of smoking. Smoking can produce more than 40 kinds of carcinogens, including lung cancer are closely related to polycyclic aromatic hydrocarbons, benzene, arsenic, propylene, nicotine (nicotine), carbon monoxide and tobacco tar, these carcinogens can be through different mechanisms, Leading to DNA damage in bronchial epithelial cells, the activation of certain oncogenes, the mutation and inactivation of tumor suppressor genes, leading to the transformation of cytogenetic information into carcinogenesis,