妇女“三期”是指月经期,妊娠期和哺乳期,一般来说,妇女在月经期身体的抵抗力较差,妊娠期的新陈代谢更为旺盛,体内各器官系统的负担加大,主要器官如心、肝、肾等,尤其易受损害,同时孕妇的呼吸循环加大,可促进毒物的吸收,哺乳期的新陈代谢过程也是较快的,因此妇女在“三期”内对某些毒物的敏感性增高,不宜从事有毒作业。在妊娠期,胎盘是防护儿童健康的最佳屏障, Women’s “Phase III” refers to the menstrual period, pregnancy and lactation, in general, women’s body resistance in the menstrual period is poor, the metabolism during pregnancy is more exuberant, the body’s organ system burden, the main organ Such as heart, liver, kidney, etc., especially vulnerable to damage, while pregnant women’s breathing cycle increases, can promote the absorption of poison, lactation metabolic process is fast, so women in the “three” of certain toxic Increased sensitivity, should not engage in toxic work. During pregnancy, the placenta is the best barrier to protect the health of children,