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Diethylstilbestrol (DES)

Diethylstilbestrol (DES) is a medication prescribed in the United States between 1948 and 1971 to prevent miscarriage or premature delivery. It is no longer prescribed because it was found to cause various medical problems in the children of the women who used it.

Daughters born to women who took DES while pregnant have a slightly higher risk of developing:

  • Abnormal cervical cells that cause an abnormal Pap test.
  • Cancer of the cervix or vagina.
  • Structural problems in their reproductive organs, such as a T-shaped uterus or a weakened cervix, which can cause infertility and a higher risk of preterm labor.

Sons born to women who took DES while pregnant have a slightly higher risk of abnormalities of the scrotum and decreased sperm counts.

Author Jeannette Curtis
Author Caroline Rea, RN, BS, MS
Editor Kathleen M. Ariss, MS
Editor Susan Van Houten, RN, BSN, MBA
Associate Editor Tracy Landauer
Associate Editor Pat Truman
Primary Medical Reviewer Patrice Burgess, MD
- Family Medicine
Primary Medical Reviewer Adam Husney, MD
- Family Medicine
Primary Medical Reviewer Kathleen Romito, MD
- Family Medicine
Last Updated May 25, 2007

WebMD Medical Reference from Healthwise

Last Updated: May 25, 2007
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