剪刀石头布 发表于 2015-8-31 09:10 
30岁以后精子质量还下降呢，你看最近公布的女性最佳生育年龄如果没记错的话是32岁。
毛毛他们很多18岁就 ...
http://www.babycenter.com.au/a6155/your-age-and-fertility
Does my age affect my fertility?Yes. Fertility starts to decline for women from about the age of 30, dropping down more steeply from the age of 35. As women grow older the likelihood of getting pregnant falls while the likelihood of infertility rises. Most women will be able to conceive naturally and give birth to a healthy baby if they get pregnant at 35 years old.
After 35 years, the proportion of women who experience infertility, miscarriage or a problem with their baby increases. By the age of 40 only two in five of those who wish to have a baby will be able to do so. The average age at which women have in vitro fertilisation (IVF) treatment is rising. This reflects the increase in infertility due to age. However, the success rates of IVF treatment for women over 40 using their own eggs are low, and have not increased much over the past decade.
From a purely biological perspective, it's best to try to start a family before you're 35 years old. Men can remain fertile for much longer than women. Even though male fertility also declines with age, it tends to happen gradually for men. While many men remain fertile into their 50s and beyond, the proportion of men with sperm disorders increases with age. The decline in male fertility can affect the health of the children they may go on to have.
The chart below shows your chances of getting pregnant according to your age. The chart is only a guide. It shows average figures for women in the best of health.
There is another important point to consider if you're trying for a baby when you're over 35. You have a higher chance of having a multiple pregnancy. In fact, the older you are, the more likely you are to conceive non-identical twins.
It's thought that your body has to produce more of the hormone that makes you ovulate as you get older. The hormone is called follicle stimulating hormone (FSH). Your body produces more FSH because there are fewer viable eggs left in your ovaries. This over-production of FSH can result in more than one follicle ripening and releasing an egg. The result? More than one egg fertilised and more than one baby!
You may be delighted at the prospect of conceiving twins. For some women having a multiple pregnancy brings them their dream family in one pregnancy. But it is also worth bearing in mind that caring for twins is more demanding of your time, emotions and finances than caring for one baby. You may also need extra care during a multiple pregnancy.
http://www.babycenter.com.au/a6155/your-age-and-fertility#ixzz3keJ2B7Cy
| 
匿名
发表于 2015-9-2 11:03:47
微信分享
