People with two uterus rarely have twins

Double womb is a rare condition. Millions of people have a case, and are genetic. The number of pregnancies at these double wombs is even rarer.

In some cases, only two uterine chambers are separate, and all the rest of the reproductive system (such as Fallop tubes, ovaries, cervix and vagina) are together. However, many cases have a full duo - including 2 uterus, 2 Fallop tubes and ovaries, 2 cervix and 2 vagina. With these cases, surgery can be performed to make two vaginas one, but still keep the two uterine cells separate.

Experts believe that this condition occurs when the Muller tubes of a developing embryo are not fully intertwined into a uterine chamber as they should.

In December 2006 in the UK, 3 babies were born from two separate uterine chambers of a mother. According to medical records, up to now only 70 women with double wombs in the world have ever conceived simultaneously on both sides of the uterus. In it, very few people maintain one or both pregnancies until the end of the period.

The probability for a woman to carry three children at the same time - two in this womb, one in the uterus - is about 1 in 25 million cases. And the opportunity for all three children to survive is much more fragile.

Three daughters of Hannah Kersey, 23 years old, may be the only babies, at least according to historical medical records.

Double womb illustration with 3 babies.
(Photo: Howstuffworks)

T. An