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。
And the difference was clear, with fertility declining by up to seven per cent with each extra year on a man’s age between 41 and 45. After that, it declined even more rapidly.
而差别是明显的。年龄在41-45岁之间,男性的生育力年降7%。超过45岁以后,生育能力的下滑速度更快。
Researcher Paula, of the Huntington Medicina Reproductiva clinic in Brazil, said: “Age counts. Men have a biological clock too. It is not the same as for women but they can’ t wait forever to have children.”
巴西亨廷顿生殖诊所的研究员保拉说 “年龄是有影响的。 男性也有生物钟,不过与女性不同,但这并不意味着他们一辈子都有生育能力。”
"They have to think about having children, especially after 45."
“男性,尤其是在过了45岁之后,不得不考虑生孩子的问题。”
外研版八年级英语上册课文翻译:Module 6
初二年级英语课文 Module 8 Public holidays
初二英语上册课文翻译【外研版】
人教版八年级英语上册--Review of units 1-6
外研版八年级英语上册课文翻译:Module 4
人教版八年级英语上册--Irregular Verbs
人教版八年级英语上册--Grammar
外研版八年级英语上册课文翻译:Module 5
牛津学案:7B Unit 4 Amazing things
人教版八年级英语上册--Unit 12 What’s the best radio station?
人教版八年级英语上册--Review of units 7-12
人教版八年级英语上册--Unit 8 How was your school trip?
初二年级英语课文 Module 3 On the radio
外研版八年级英语上册课文翻译:Module 2
初二年级英语课文 Module 1 hobbies
人教版九年级英语:Unit 3 Teenagers should be allowed to choose their own clothes.--1
初二年级英语课文 Module 9 Heroes
外研版八年级英语上册课文翻译:Module 12
人教版八年级英语上册--Unit 9 When was he born?
初二年级英语课文 Module 5 Problems
外研版八年级英语上册课文翻译:Module 7
外研版八年级英语上册课文翻译:Module 9
初二年级英语课文 Module 6 Entertainment
人教版八年级英语上册--Unit 4 How do you get to school?
外研版八年级英语上册课文翻译:Module 1
外研版八年级英语上册课文翻译:Module 10
初二年级英语课文 Module 10 my perfect holiday
人教版九年级英语:Unit 4 What would you do?--2
新目标七年级英语上册期末复习资料
人教版八年级英语上册--Additional Material
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