Effects of exposure to diethylstilbestrol (DES)

Between 1948 and 1971, millions of women took a drug called diethylstilbestrol (DES) to prevent miscarriage.

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 result.
  • Cancer of the vagina.
  • Structural problems in the reproductive organs (such as a T-shaped uterus), which can cause infertility.


Author: Shannon Erstad, MBA/MPHLast Updated: January 12, 2007
Medical Review: Joy Melnikow, MD, MPH - Family Medicine
Barbara S. Apgar, MD, MS - Family Medicine, Women's Health
Ross Berkowitz, MD - Obstetrics and Gynecology

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