Glossary Term:


diethylstilbestrol or DES




A man-made form of estrogen prescribed to some pregnant women between 1938 and 1971 to help prevent miscarriages or premature deliveries. It can increase risk of certain cancers for anyone who was exposed to it during gestation (as an embryo or fetus if the mother took it during pregnancy). Women who took this drug while pregnant may be at a slightly higher risk of breast cancer. It is no longer available in the United States. Also known as DES.