About 12% of pregnancies begin as multiples, but fewer than 2% reach full term. Vanishing Twin Syndrome occurs when one embryo stops developing and is absorbed, leaving a single surviving baby.

Eight-month-old twins from Haywards Heath, West Sussex, have met the surgeon who saved their lives before they were born.

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 ...

What's the meaning of fraternal twins? Fraternal twins come from two separate fertilized eggs that develop in the womb at the same time, each with their own placenta and amniotic sac. Like any ...

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.

The twins' burial challenges the traditional belief that Roman society treated infant deaths with indifference.

There are queries about twinship skipping generations, whether more twins are left-handed, why they suffer separation anxiety, if there is fighting inside the womb, among other curiosities.

According to those familiar with the Duvals, the twins were extremely close. But the tight bond formed in the womb could not withstand a swelling sense of resentment that fragmented their lifelong ...

Researchers analyzed Norwegian information on nearly 730,000 Norwegians, including 13,800 twins, born between 1967 and 1978. After controlling for birth weight, maternal education, and other factors, ...