A landmark new study confirms that growing a human being in nine months takes a toll—and multiple pregnancies can have a cumulative effect. Scientists already knew pregnancy puts enormous stress on ...

Being pregnant with twins can be exciting for many women, but the risks associated with multiple pregnancies can be frightening, particularly in Nigeria, where the healthcare system remains fragile, ...

Multiple births — twins, triplets or even more — can be both a blessing and a curse. Mercifully, a steep decline from twins to nonuplets fits a simple probability progression. Births of nine (usually ...