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.
Women Waiting Longer to Have Children. American women are having their first babies at increasingly older ages. According to a recent report from the National Center for Health Statistics, the average age of first-time mothers in 2014 was 26.3, up from 24.9 in 2000. The sharpest increases in age have occurred since 2009, when the average was 25.2.