Re: 现在生育率低,年轻人真不一定不想生,而是不能
[复制链接] 浏览该主题帖我看到一些不同的说法,更全面地考虑“Impact of Advanced Paternal Age on Fertility and Risks of Genetic Disorders in Offspring”:
https://pmc.ncbi.nlm.nih.gov/articles/PMC9957550/
Kaltsas A, Moustakli E, Zikopoulos A, et al. Impact of advanced paternal age on fertility and risks of genetic disorders in offspring[J]. Genes, 2023, 14(2): 486.
Males’ sperm parameters are not noticeably altered until they are 34 years old [34]. According to research by Kidd et al., the number of sperm begins to change after a person reaches the age of 34 [34]. After the age of 40, a man’s sperm count and the percentage of his sperm that are viable begin to decline. Beyond 45 years of age, less semen is produced, and sperm motility begins to decline around the age of 43 [37].
Sperm motility, morphology, and vitality diminish significantly beyond the age of 35. Therefore, age should be considered by infertile men who want to delay fatherhood [48].
另外,你说:
“某些男的还给权威的科学研究点踩,笑死我了”
看到有人给“权威”点踩,就能判断出点踩人的性别,就能判断出对方的“点踩”一定很可笑
——我想这一般被称作迷信权威,这并不是科学的态度,你也并不是崇尚科学,你只是希望挥舞一个大棒党同伐异而已。
BlancRedCesc (Le Professeur) 在 ta 的帖子中提到:
有关父系携带突变数随年龄的研究:https://www.nature.com/articles/nature11396 见图2
有关女性怀孕/分娩时间对流产风险的研究:https://www.nejm.org/doi/abs/10.1056/NEJMp048087 这个不是open access,可以参考https://geneticsandfertility.com/services/general-infertility/maternal-age-reproduction/ 里面的图。其实是从35岁显著增加,不过从30岁年龄段就可见增加。
一个是《自然》一个是《新英格兰医学杂志》,引用数都是超过1000的,足够权威了
签名档
丢掉幻想,准备斗争。
