以下是引用Joyuan在12/23/2013 12:51:00 PM的发言:
A woman’s best reproductive years are in her 20s. Fertility gradually
declines in the 30s, particularly after age 35. Each month that she tries, a
healthy, fertile 30-year-old woman has a 20% chance of getting pregnant.
That means that for every 100 fertile 30-year-old women trying to get
pregnant in 1 cycle, 20 will be successful and the other 80 will have to try
again. By age 40, a woman’s chance is less than 5% per cycle, so fewer
than 5 out of every 100 women are expected to be successful each month.
quote from Age and Fertility by the American Society for Reproductive Medicine
Of woman ages 40 to 44, 29% will experience infertility. 即使是40岁的女性,不孕也是29%,也就是说71%的生育能力正常,剩下的29%也有一部分可以通过治疗或者试管的方法生育小孩。平均每个月5%几率受孕只是把备孕的时间拖长了,并不是说只有5%的人能生的意思。