Identical twins are not as identical as previously assumed, according to a study published today (January 7) in Nature Genetics. Rather than having exactly the same DNA sequences, twins start ...

Through a subchorionic hematoma, twin-twin transfusion syndrome, a pandemic and early labor, Dana Salmonese and doctors were able to deliver healthy baby boys Julie Mazziotta is the Senior Sports ...

Pregnancy an extraordinary process, and for some, it begins as a twin pregnancy that they may never even know. Research says that one in eight individuals enter the world as a twin, but in a lot ...

One twin may have a particular medical condition, while the other does not. Here again, epigenetic influences and developmental factors in the mother’s womb may influence one twin but not the other.

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"She cannot lie to me," Tia Mowry says of her twin sister Tamera on the latest episode of the PEOPLE Every Day podcast, in which she talks "twintuition" with her "womb-mate" Glenn Garner is a form ...