|
Male fertility declines with age – with even a year making a difference, researchers have warned. 据英国《每日邮报》10月20日报道，研究警示男性的生育力随着年龄的增长而下滑，甚至每年都有较大差别。 They say that after the age of 41, a man’s odds of fathering a child decline rapidly. And after 45, those who haven’t started a family and want one should start doing something about it. 研究人员称，男性在41岁之后做父亲的几率会迅速降低。而在45岁以后，那些仍处于单身但还想要组建家庭的男性就应该为此费点功夫了。 The warning comes from a study of IVF patients in which the man’s sperm fertilised an egg from a donor. 该警告来自于针对接受试管受精病人的一项研究。在这些病人体内，男子的精子与受捐的卵子进行了配对。 In the context of the study, the use of donor eggs allowed the researchers to separate out the effect of the man’s age from that of the woman’s. 在这种研究背景下，使用捐赠的卵子可以让研究人员分辨出(受精卵的质量)是受男人年龄影响还是源自女方因素。 The donor eggs all came from young, healthy women and so any differences in pregnancy rate must be due to the sperm. 卵子捐赠者均为年轻健康的女性，所以任何受孕几率上的差别一定是源于精子。 | 
