The greatest risk involved in a twin or multiples pregnancy is that you'll deliver the babies prematurely (before 37 weeks of pregnancy), which increases their chances of health problems.

The soon-to-be mom of five has had a tough, but joyful pregnancy with her twins so farMackenzie McKee is sharing a few ...

"My body went through more than I knew it could," Beyoncé said in her new Netflix documentary film, Homecoming, about her pregnancy with twins Sir and ... out now, the 37-year-old singer opens ...

Teen Mom: The Next Chapter star Mackenzie McKee shared an update about her latest pregnancy ... the twins after a fan predicted that she’s due in August. "I carried my singletons to 36-37 ...

Twins—smaller at birth, on average, than singletons—start out smaller in pregnancy than was previously ... 2.7 to 4.2% less fat from 15 to 37 weeks. Previous studies of twin growth in the ...