宫内节育器(俗称避孕环)是一种安全、有效、简便的避孕措施,当不需要避孕时,还可以把环取出,因此受到广大妇女的欢迎。在我国生育年龄的已婚妇女中,有半数人采用了此种方法,占全世界上环总人数的三分之二。我国不但提倡控制人口数量,而且还要求提高人口质量,即优生、优育、优教……。母乳喂养是婴儿健康发育、成长的项重要措施,因此,不少喂奶的妈妈自然会产生“上避孕环会不会影响乳汁的分泌”的疑问。下面让我们先来看一下,乳汁是怎样产生和排出的。在妊娠期间由于血液中雌激素及孕激素增加,刺激乳腺内的乳腺管及乳腺泡增生,静脉充血,因而乳房增大。妊娠后期,脑下垂体内有一种蛋白质性质的内分泌素产生,叫做催乳素。它可作用在已经增生的 IUD (commonly known as the contraceptive ring) is a safe, effective and easy contraceptive measures, when not in need of contraception, the ring can be removed, so by the majority of women welcome. Half the married women of childbearing age in our country have adopted this method, accounting for two-thirds of the total number of ring members in the world. Our country not only advocates the control of the population, but also requires the improvement of the quality of the population, that is, eugenics, fertility education and education. Breastfeeding is an important measure for the healthy development and growth of babies. Therefore, many nursing mothers will naturally have the question “Will the contraceptive ring affect the secretion of milk?” Let’s take a look at how milk is produced and discharged. During pregnancy due to increased estrogen and progesterone in the blood to stimulate the mammary gland mammary duct and breast bubble hyperplasia, venous congestion, so the breast increases. Late pregnancy, pituitary gland has a protein-type endocrine production, called prolactin. It can act on already hyperplasia