Age and Fertility

Age and Fertility

In our Chinese society, value has changed dramatically.  Women now has increasing opportunity for advanced education and careers.  In addition, there are expanding options for contraception and easy access to abortion.  Therefore, late marriage and delay in child bearing are common.

Age is the single most important factor influencing conception.  Advance in age causes a decline in egg quality and quantity.  A woman is born with a fixed number of eggs, about 1 to 2 million.  However, 1 to 2 thousand eggs die every month. So the number of eggs dwindle very quickly.  The eggs also age as the woman ages, affecting the egg quality.  Poor egg quality increases the risk of infertility, miscarriage and abnormal babies.  IVF improves the conception chances but success rate still declines dramatically with advancing age.

For a man, there is no measurable decline in male fertility before the age of 45 to 50.


If a woman has regular menstrual cycles and regular sexual intercourse without protection for a year or more without getting pregnant, she should seek medical and fertility advice from a Medical Practitioner.

If as above, and a woman is 35 years old or older, she should seek help if not pregnant after 6 months of trying for a pregnancy.

If a woman has menstrual irregularity, severe dysmenorrhea (painful periods), dyspareunia (painful sexual intercourse), known pelvic inflammatory disease or any other factors that may affect her fertility, she should seek help early.

Egg freezing is an option for a single woman or any woman who is not in the position to have children in the immediate future but concerned about their future fertility.  In general, the younger the woman, the quantity and quality of a woman’s eggs are better.  Consequently, the chance of the eggs being used successfully to produce a baby is much improved the younger the woman.

Egg freezing is particularly urgent for a woman who is approaching 35 years of age.