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媒体揭秘“地下捐精”:可持续发生性关系至怀孕(图)

2016-05-30 05:42:32   华商报


原标题:1000人供精只有100人合格

华商报记者 魏光敬 文/图

据国内精子库检测权威报告,正常成年男性精子合格率不足30%。西北妇女儿童医院人类精子库2015年供精者1000人,合格者仅100人,但用精者有1400人。专家说,精子一年不如一年,但精子需求量越来越多。是什么原因导致精子质量不断下降?怎样才能提高精子质量?

5月14日,西安的天气有点凉,秦岭山里下起了雪。“心跟下了雪一样冷”,小青说。因为结婚七年一直没生育,成了她的一块心病。近期她和丈夫再次来到医院检查,结果是丈夫精子质量无法达到怀孕标准。在西安高新区一茶馆接受采访时,大学老师小青说,自己40岁了,“做不了妈妈可怎么办啊”。

小杨夫妻是80后,都是独生子女,现在大女儿已经7岁了。三年前,他们开始要二胎,却一直没成功,为此双方家人都比较着急。专门到医院检查,没想到的是,男方精子质量比较差。为何第一胎怀孕非常顺利,到现在精子却出现质量问题?小杨夫妻俩有点不明白。

随着国家全面放开二孩政策,一些70后夫妻也想要二孩。43岁的西安市民李子经过近一年努力,还是没有成功,没办法的情况下,李子跟妻子商量,采取人工受精或做试管怀孕。

精子质量一年不如一年

西北妇女儿童医院人类精子库(以下简称省妇幼精子库)主任医师、副主任张洲介绍,男科不育症是从上世纪七十年代才开始发展起来的学科,男性不孕疾病逐年增加,精子质量一年不如一年。

张洲说,目前常规精液质量检查的项目主要包括:精子浓度、精子活力、精子存活率、精子形态(畸形)、炎症感染(病原体感染)等。

公开数据报道称,目前多数研究认为,全球成年男性的精液质量在不同年代呈现出下降趋势。国外学者等用专业分析法研究显示,50年来全球性的精子计数呈下降趋势,平均每次射精量由1940年的3.4ml下降到1990年的2.7ml,精子密度由1940年的113×10/ml下降到1990年的66×10/ml。我国学者研究显示,近25年来中国正常男性精子计数、活动率和正常形态率均存在下降趋势。

世界卫生组织对人类精液检查中,将1999年制定的精子密度达标的标准,从每毫升2000万个精子算正常,降低到了如今的1500万个精子算正常。而1990年这一达标数值是6600万。

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