Pregnant women need sufficient amounts of iron, which is included in most prenatal vitamins. But like many supplements, taking too much iron can have negative side effects.

Research is uncovering more and more about possible health risks to babies if their mothers are obese during pregnancy. Another one for the list: being born with low iron levels.

What puts women at risk of pregnancy problems? Lots of factors, including illness, obesity and stress. A recent finding says that a type of antibody is also a risk factor.

There are several vaccines pregnant women are advised to get and several others they should avoid while pregnant. The flu vaccine is one pregnant women should consider.

One consideration in undergoing in vitro fertilization ( IVF ) treatment to have a baby is how many embryos to transfer into a woman's womb at once. One? Two? Three?

What makes a woman more likely to use effective contraception? Scientists are still exploring all of the social, economic and cultural reasons. A recent study confirms one important link: Attitude plays a role.

One of the benefits of immunization is that a large enough population of vaccinated individuals can often provide protection even for those not vaccinated in the community.

Young women who require chemotherapy or other cancer treatment may find that the treatment risks permanent damage to their fertility - but science is catching up.

It's no surprise that smoking is harmful to a pregnant woman's fetus. But smoking can also increase the risk of a woman experiencing a dangerous kind of pregnancy in the first place.

The commonly held belief that drinking milk will prevent stress fractures may not be wholly true. Calcium may be less important than vitamin D when it comes to building strong bones.