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.
When is it Safe to Deliver a Healthy Baby? The American College of Obstetrics and Gynecologists recommends that 39 weeks of gestation is the earliest time to deliver a healthy baby. However, many women believe that it is safe to deliver before 39 weeks and some women even believe that full term is reached before 37 weeks. It is now clear that the number of late preterm births (34-36 weeks) and early term births (37-38 weeks) are increasing.