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近年来,环境化学污染物对人类的生殖毒性受到广泛重视。六十年代的“反应停事件”表明,无其他毒性的药物却可引起胎儿的畸形;二溴氯丙烷的唯一毒作用是引起精子缺乏而导致不育;铅不仅引起精子异常和精子缺乏,还使自发性流产率和死胎率升高。美国成年男性精子数目低于正常值(或均值)的百分比从1950年的12％上升到1977年的22％,几乎上升了一倍。一项调查发现,最近结婚的夫妇中,至少有15％有生育障碍。临床上发现的男性不育症患者的精子缺乏症有半数原
In recent years, environmental chemical pollutants on human reproductive toxicity has received widespread attention. The “reaction stop events” of the 1960s showed that no other toxic drugs can cause fetal malformations; the only toxic effect of dibromochloropropane is the lack of sperm resulting in infertility; and lead not only to abnormal sperm and lack of sperm, but also Spontaneous abortion rate and stillbirth rate increased. The percentage of U.S. adult men whose sperm count is less than normal (or average) rose from 12% in 1950 to 22% in 1977, almost doubling. One survey found that at least 15% of recently married couples have a maternity disorder. Men found in men with infertility sperm deficiency half of the original