Gaining weight is a natural part of growing a baby in your womb. Being overweight or obese while you are pregnant, however, can carry additional risks for your pregnancy.

Having a baby as you approach middle age can be an unexpected surprise or a long hoped-for blessing. But there are risks to having babies as women grow older.

Severe, long-term pelvic pain in women could be more than cramps during her period. Endometriosis might be to blame, and it was believed to be more common in older women.

You’ve no doubt heard that hormone replacement therapy (HRT) used for menopause symptoms increases breast cancer risks. More recent studies have found that maybe HRT is okay. Now the pendulum has swung back.  

Is it possible that the environment inside a woman's body may sometimes reflect what is going on in her life? How much could severe stress contribute to a stillbirth?

One recent study found that too little vitamin D didn't appear to affect baby's bone growth. But there are other risks if expecting moms have too little vitamin D.

Having difficulty conceiving a baby over a long period of time may indicate a condition called subfertility. Subfertility carries its own slight risks if parents eventually do have a baby.

The US has one of the highest teen pregnancy rates among developed nations. Understanding the risk factors for teen pregnancy might lead to effective prevention.

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.

Deciding whether to take medication while pregnant can be a tough decision. It becomes tougher when the risks and benefits are not always clear, such as with mental health medications.