Fertility gradually declines wth age, in both men and women.
In women, this begins from around the age of 30. From a purely biological perspective, we recommend that couples try to start a family before the age of 35 as from then onwards fertility issues become more commonplace. Once women approach 45, the chances of conceiving are extremely low, and associated risks are higher. While the media will occassionally report instances of women older than 45 having children, the vast majority of these babies will be as a result of a donated egg from a younger woman.
For men, the story is somewhat simlilar in that fertility also declines with age. Many men reman fertile into their 50's and beyond. However, there is a concern that children conceived by older men may have health issues.
Couples who are concerned about age related fetility, should discuss the matter with their clinican.