Twins—smaller at birth, on average, than singletons—start out smaller in pregnancy than was previously known, according to a study by researchers at the National Institutes of Health (NIH). The ...

While many people think of twins as a rare "double blessing" decided purely by luck, science suggests that your biological clock might actually be stacking the deck. As more women choose to start ...

The news of being pregnant with twins doubles the excitement and happiness. But twin pregnancies can have their challenges too. Twin-to-Twin Transfusion Syndrome (TTTS) is one such rare challenge of ...