It's not news that smoking during pregnancy is a bad idea. But researchers are still learning the various ways it can affect a developing baby.

The vast majority of pregnancies are uncomplicated, with healthy moms and healthy babies. But one of the more common pregnancy complications when one occurs is pre-eclampsia.

The effects of a mother's body on her developing child are still mysterious in many ways. For example, the possible effects of emotional stress on a baby aren't totally understood.

Hot flashes are a biggie among middle-aged women. But common effects of menopause can differ around the world. New research has identified a number of different symptoms among menopausal women with osteoporosis and cardiovascular disease.

A small percentage of the population snores even without having an underlying sleep problem. But a woman who starts snoring during pregnancy may want to talk to her doctor about it.

Understanding how and why some people's brains deteriorate as they grow into old age involves many possible factors. It may even be linked to a baby's brain before birth.

It's a catch-22. If you find out your child has a heart defect before he's born, you can prepare. But it can also stress out mom — which can affect the baby as well.

Experiencing abuse as a child means more than a higher risk of mental illness. Researchers are learning that abused children are at risk for various long-term physical issues as well.

Marijuana is often thought of as a drug that causes relatively little harm compared to other street drugs. But that may not be the case if you're carrying a little one to term.

Moms-to-be who are both overweight and smokers are more than twice as likely to have a baby with a congenital heart defect than women who are either overweight or a smoker but not both.