Hello @rose53,

Good question! D.E.S. was a hormone treatment that was given to pregnant women who were at high risk for a miscarriage, premature labor, etc. Here is a link to an article about DES from the website of National Cancer Institute website, https://www.cancer.gov/about-cancer/causes-prevention/risk/hormones/des-fact-sheet.

It's use was ended in 1971.

@rose53. Teresa @hopeful33250 gave a really good answer. DES stands for Diethylstilbestrol.

I remember when DES was in the news. It was very frightening.

A woman I used to work with in the late 70's told us (our group) that her mother was prescribed Diethylstilbestrol (DES). At the time she was about 25 years old which was about the same age as I was then. I remember how frightened she was about the possibility of cancer and infertility. I've lost track of her over the years and I wonder what happened. I'm hopeful that she got married and had the family she so wanted.