In the general population, less than 3 out of 100 births involve twins,
triplets, or more.1 Your chances of conceiving a multiple pregnancy
increase when you use fertility drugs and
assisted reproductive technology (ART).
Currently, about 20 out of 100 multiple pregnancies occur naturally, while
the other 80 out of 100 are the result of using fertility drugs or assisted reproductive
technology.2 The majority of these pregnancies are
twins, but there are also more triplets (or more) than in the general
When assisted reproductive technology (ART), such as IVF, is used, the risk of conceiving a multiple pregnancy is directly related to
the number of embryos transferred to a woman's uterus. Because of the risks of multiple pregnancy to the babies, experts recommend limiting the number of embryos transferred.
In this article
This information is produced and provided by the National
Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National
Institute via the Internet web site at http://
.gov or call 1-800-4-CANCER.
WebMD Medical Reference from Healthwise
November 14, 2013
This information is not intended to replace the advice of a doctor.
Healthwise disclaims any liability for the decisions you make based on this