While cocaine's effects are usually immediate, the effect it can have on a fetus may last a lifetime. Babies born to mothers who smoke crack cocaine during pregnancy -- so-called ''crack babies'' -- usually have their own set of physical and mental problems.hile cocaine's effects are usually immediate, the effect it can have on a fetus may last a lifetime. Babies born to mothers who smoke crack cocaine during pregnancy -- so-called ''crack babies'' -- usually have their own set of physical and mental problems.
Last year, there were 27,000 babies born to momâs over 40. The study was done to help women understand their fertility lifecycle. They still argue that the safest time to have a baby is between 20 and 35. In fact, 30% of 35 year olds need more than a year to conceive while only 5% of 25 year olds need this much time.
Overall, Americans tend to believe the ideal age to have one's first child is a bit younger for women than it is for men. That likely reflects the greater relevance of women's biological clock when it comes to childbearing. However, on average, the mid-20s is seen as the ideal age for both genders.