A twin pregnancy is when there are two fetuses in the uterus at the same time. Twins can be identical, meaning they developed when a single fertilized egg split early in development, or fraternal, ...

It's true that being pregnant with two comes with some risks, but with good prenatal care and close surveillance, they can be managed.

NEW YORK (Reuters Health) - Women who've undergone a c-section for a pregnancy with two or more infants can usually avoid this operation in future pregnancies with just one infant, according to a ...

Identical (monozygotic) twins develop from a single egg-sperm combination that splits into two. If the split is delayed, usually a week or so after conception, the processes of growing a placenta, ...