近年来,吸烟的年轻妇女在日本逐渐增多。吸烟不仅仅是引起肺癌的原因,而且对妇女生殖系统的种种影响也已逐渐明显。如闭经期早、低体重的新生儿多以及围产期死亡率增加等,都与吸烟有关.以前曾提及吸烟是引起流产的常见原因,然而有关吸烟与自然流产的研究还不充分,因为对自然流产和人工流产的因果关系还不能完全区分。关于自然流产,应结合年龄、经产次数、婚姻 In recent years, young women who smoke have gradually increased in Japan. Smoking is not only the cause of lung cancer, but also the effects on women’s reproductive system have gradually become apparent. Such as premature menstruation, low birth weight infants, and increased perinatal mortality, are all linked to smoking. Previous references to smoking were a common cause of miscarriage, yet studies on smoking and spontaneous abortion were inadequate because The causal relationship between spontaneous abortion and induced abortion can not be completely distinguished. About natural abortion, should be combined with age, number of times of production, marriage