A recent news report pointed out a fact that many people might consider to be alarming and that fact is that the number of high risk pregnancies is on the rise in the United States. More women are having trouble with conceiving and more women are experiencing pregnancies that are prone to complications. However, there's an upside to the report and that is that more women are also successfully conceiving and delivering healthy babies despite the risks that are involved. This speaks to the fact that modern medicine is working hard to keep pace with the rest of modern life.
Part of the reason that high risk pregnancies are on the rise is that more and more women are postponing pregnancy into their later years and requiring infertility treatments in order to get pregnant. This, along with the fact that infertility treatments are more readily available to a broader population of women today than they were in past, leads to an increased number of people who didn't get pregnant the good old-fashioned way. And that means that there are more people who are at risk during their pregnancies.
"Exact numbers are not available, but doctors say that tens of thousands of organ transplant recipients, breast cancer survivors, women with heart defects, and even women with the AIDS virus have decided to risk childbearing in the last several years." (source)
On the flip side, these women are under the care of a fertility doctor who is trained in the issues that are unique to women dealing with infertility. As a result, it is more likely than not that these women will ride out the difficulties of the pregnancy and deliver healthy babies.