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职业危害因素包括化学、物理和生物因素以及精神紧张、劳动强度、劳动体位和姿势等。其中主要的是化学和物理因素。关于职业危害因素对人类生殖及其子代的影响。是近几十年才逐渐被认识的。60年代初期,镇静催眼药反应停的应用,造成西方国家1万多名婴儿的缺肢、短肢畸形,使人们认识到化学物致畸作用的严重性。70年代初,人们又发现母亲孕期服用雌激素乙菧酚,其女性子代青春期阴道和宫颈肿瘤发生率明显增加,从而了解到化学物经过胎盘转运致癌的特性。加上70年代末和80年代初,美国报道工人接触烟
Occupational hazards include chemical, physical and biological factors as well as mental stress, labor intensity, work position and posture. The main ones are chemical and physical factors. Effects of occupational hazards on human reproduction and its offspring. It is only gradually recognized in recent decades. In the early 1960s, the application of sedative and antihypertensive drugs stopped shorting limbs and short limb deformities in more than 10,000 infants in western countries, making people realize the seriousness of teratogenic effects of chemicals. In the early 1970s, people also found that mothers taking estrogen during pregnancy kang phenol, the female offspring of adolescent vaginal and cervical cancer significantly increased the incidence, and thus understand the chemical transport of carcinogens through placental characteristics. Together with the late 1970s and early 1980s, the United States reported that workers exposed smoke