DES: One Of The Biggest Medical Disasters In History

Caitlin McCarthy’s mother was prescribed a prenatal vitamin that contained DES – a toxic and carcinogenic estrogen – and when Caitlin was 35 she learnt that she had also been exposed to the drug that has been touted as one of the biggest medical disasters in history.
Caitlin, who is the award-winning screenwriter of the feature film WONDER DRUG, is on a mission to bring attention to this massive medical eff up, and raise awareness about just how widespread its ripple effect is.
In this interview, Caitlin shares what she has learnt about this shocking and completely devastating case of medical negligence, and how it affects her life and the lives of many just like her.

What is DES?
In Australia, DES (diethylstilbestrol) is more commonly referred to as stilboestrol. No controlled studies were ever conducted by the drug companies to determine the effectiveness or safety of DES for use during pregnancy. Yet, for decades, drug companies claimed DES prevented miscarriages and problem pregnancies.
DES was prescribed to millions of pregnant women for decades: from 1938 until 1971 (and in a small number of cases for several years thereafter) in the United States; and until the mid-1980s in parts of Latin America, Europe, Australia, and the Third World.
DES was sometimes given as an injection, but primarily it was prescribed in pill form. Never patented, DES was marketed under 200 different names, although the majority of the drug was actually produced by Eli Lilly. DES was sometimes even included in prescription prenatal vitamins. Because DES was also used in animal feed, it was ingested by men, women, and children who ate poultry and meat for decades.
The currently proven effects of exposure include a rare vaginal cancer in DES Daughters; greater risk for breast cancer in DES Mothers; possible risk for testicular cancer in DES Sons; abnormal reproductive organs; infertility; high-risk pregnancies; and an increased risk for breast cancer in DES Daughters after age 40.
Researchers are now investigating whether DES health issues are extending into the next generation, the so-called DES Grandchildren. As study results come in, there is growing evidence that this group has been adversely impacted by a drug prescribed to their grandmothers.
There are a number of other suspected effects, including auto-immune disorders, but many of these effects are still awaiting further research.
Why is DES described as one of the biggest medical disasters in history?
The DES disaster affected millions around the world for decades. Emerging research suggests that DES altered DNA. So the DES disaster will go on, and on, and on for generations. It will never end. That’s pretty big!

How is it that something like this – that so tragically affected millions of people – was allowed to happen? And why was it allowed to go on for so long?
My short answer:
• Patients followed doctors’ orders back then without question.
• Doctors believed the DES hype from drug company sales reps, and didn’t read the published reports.
• Drug companies saw dollars signs, and tossed morals and ethics out the window.
• The FDA fell asleep on the job.
The DES disaster was the perfect storm of naïveté, negligence, and greed.
My long answer:
Sir Charles Dodds created DES, a synthetic estrogen, in London, England, in 1938. He never intended DES for use during pregnancy. It was intended for short-term use by menopausal women. DES was cheap to make and easy to use – just a simple pill. No more painful estrogen shots or risk of overdose. DES was a “wonder drug.”
Dodds created DES while working with a grant that covered the cost of research, but prevented his discovery from being patented. Once the formula was released, he couldn’t control its real-life uses.
The drug companies flooded the FDA with applications for DES. Overworked and underfunded, the FDA asked the drug companies to participate in a joint application. One decision about DES applied to all.
It’s important to repeat that no controlled studies were ever conducted by the drug companies to determine the effectiveness or safety of DES for use during pregnancy, even after some scientists started questioning its efficacy in the 1950s. As early as 1953, research revealed that DES did not work – that DES actually brought about higher rates of premature birth and infant mortality – yet DES continued to be prescribed to pregnant women for decades. This is because pharmaceutical companies continued to heavily promote DES use to doctors. The drug was a top moneymaker for Big Pharma.
Also, as early as 1938, studies showed that DES promoted cancer in lab animals. But at that time, people thought animal studies only provided a hint of what could happen in humans. Also, no one knew that drugs could cross the placenta and affect a baby in utero. (Note there was a 1941 mouse study that showed mice with absent or deformed fallopian tubes. The warning signs were there for humans.)
In the late 1960s, there was an unprecedented appearance of rare cancer in young women. Clear cell cancer (CCA) – a rare cancer of the vagina – was diagnosed in an age group never before found to develop it. (Normally elderly women developed CCA.) There were eight such cases at Massachusetts General Hospital in Boston, Massachusetts, USA alone. One of the mothers raised the question of whether her daughter’s cancer might be connected to DES exposure in utero. Bingo!
Doctors discovered the DES link in 1971 and published their findings in the April 1971 issue of New England Journal of Medicine. News of the cancer cases made national headlines. However, the FDA did not act on this information until public pressure forced the FDA to contraindicate DES during pregnancy in November 1971. DES was not banned for human use. (The reaction of Australia’s health authorities in 1971 was silence.)
It wasn’t until September 2000 that the FDA finally withdrew its approval of DES for marketing.
I am a big believer in the power of an apology. When the British Government officially issued a long-awaited apology to the hundreds of survivors of the thalidomide drug scandal in January 2010, I immediately thought of DES. To this day, the millions of DES victims have never received an apology from the U.S. Government.
Also, to this day, not one drug company has ever apologised or accepted responsibility for the DES tragedy. Nevertheless, the drug companies have paid millions in out-of-court verdicts and settlements to DES Daughters and Sons who suffered injuries from their exposure.
In 2010, I asked U.S. Senators John Kerry and Scott Brown to jointly contact the FDA (a U.S. government agency) about a DES apology. On February 22, 2011, the senators received a 3-page response from the FDA, per their joint letter about a DES apology. The FDA’s letter did not contain an official apology from the federal government for the DES drug disaster. However, after 40 years of silence, it finally acknowledged the devastating health consequences of DES, explained FDA initiatives to prevent future drug disasters, and talked about DES as a “tragedy.”
But the FDA continues to cover up its role in the DES disaster. It actually touts DES online as one of its milestones in “100 Years of Promoting and Protecting Women’s Health”.
Many DES Daughters have written to the FDA, asking it to remove the offensive “milestone” from its website. To this day, the FDA refuses.
What is your connection to DES?
I discovered during a colposcopy in 2005, at age 35, that I had been exposed to DES. Unbeknownst to my mother, she had been prescribed a prenatal vitamin that contained DES. The discovery not only devastated me, but my entire family. That’s really important for people to know. DES affects everyone in a family. Guilt, fear, anger, and sadness are common emotions.
I decided to empower myself through activism and writing a screenplay about DES called WONDER DRUG. Does this make the pain go away? No. But I’m determined to make lemonade out of a lemon situation.
How does being a DES daughter affect your body, health and life today?
I take precautions such as staying current on the latest DES research, and being vigilant about proper health screenings such as having annual mammograms and the special DES Pap/pelvic exam every year. I also try to avoid soy, pure lavender, tea tree oil, and other items that mimic estrogenic activity in humans. My eyes have been opened. I’m now more aware of what I put into my body.
Is it possible that another medical disaster similar to this one could happen today? Are we any more protected?
Not one damn thing has been learned from the DES tragedy.
For example, a recent paper in the Journal of Bioethical Inquiry found parallels between the DES disaster and the current prescribing of dexamethasone, a steroid being prescribed to pregnant women off-label to try to prevent intersex, tomboys and lesbians. Pregnant women are being told the drug is safe, which isn’t true. It’s risky. The paper asks why government regulators are allowing these off-label prescriptions to happen.
And then there’s BPA, DES’s chemical cousin. The FDA finally banned it from baby bottles and children’s drinking cups in 2012, but still refuses to ban it from other plastics or food packaging, including canned food containers, water bottles and baby formula containers.
It’s always the same old story repeating itself. That needs to change!
Tell us about your film, Wonder Drug …
WONDER DRUG (www.wonderdrugthemovie.com) is like THE HOURS, with three intersecting storylines across several decades. Set in Boston, Massachusetts, USA, WONDER DRUG is inspired by the true story of the drug DES and interweaves the lives of a Big Pharma executive, a feminist doctor, and thirtysomething newlyweds.
The feature length film is in development with Creative Producer/Star Alysia Reiner, best known for her Screen Actors Guild Award (Outstanding Performance for an Ensemble Cast) playing Christine, Jack’s fiancée and then bride, in the Oscar-winning film SIDEWAYS.
I wrote the screenplay, which has won awards or received nominations in over 20 international film festival screenplay competitions and labs. Most notably, WONDER DRUG was selected as an Alfred P. Sloan Foundation script for the Hamptons Screenwriters Lab and chosen for a live staged reading of select scenes at the 15th Annual Hamptons International Film Festival, sponsored by the Sloan Foundation. The reading starred Steve Guttenberg (THREE MEN AND A BABY) and Alysia Reiner.
I wrote WONDER DRUG because the mistakes we do not acknowledge we are doomed to repeat. The script highlights historical issues of control of medicine by pharmaceutical corporations and their government collaborators. Pre-feminism stature of women in society is used as a potent metaphor for the courage needed to live one’s truth and speak up in the face of institutional resistance, abuse, or neglect.
Why do you do what you do? Why is it so important for you to spread this message?
Maya Angelou once said, “When you know better, you do better.”
Women are undergoing infertility treatments with hormones and HRT interventions with additional hormones. If they don’t know that they’re a DES Daughter, they are unaware that they were exposed to unnaturally high levels of a synthetic estrogen before birth. That has to be of concern when using additional hormones.
People also need to know if they were exposed to DES so they can make informed medical choices and get the medical screenings they need to protect their health.
Most doctors don’t even know that DES Daughters need a special Pap screening. That is because most doctors aren’t learning about DES in medical school. As a result, millions of men and women are not receiving the proper checkups, tests, and treatments from doctors because they do not know about their exposure.
Also, a rare clear cell cancer linked to exposure is considered a disease of post menopausal women, so it’s pivotal to educate people about DES now, as we may see a second wave of clear cell cancer when those exposed to DES reach this age. Since DES was heavily prescribed in the 1950s, we could see an outbreak of clear cell cancer cases in the near future.
Additionally, DES provides a classic example of endocrine disruption and its trans-generational effects, giving science an illustration of such effects in other forms of life such as birds and fish.
It’s outrageous that more attention has not been paid to this subject by the medical community and the media.
We all need to do better.
Do you know someone who has been exposed to DES?
Bio: American Caitlin McCarthy (www.caitlinmccarthy.com) received her Master of Fine Arts in Creative Writing from Emerson College, which is ranked by U.S. News & World Report as one of the best graduate programs in the USA. An award-winning screenwriter at international film festivals and labs, Caitlin has two feature films in development: WONDER DRUG with producer/star Alysia Reiner; and RESISTANCE with director Si Wall. Caitlin is also partnering on writing/creating the TV series PASS/FAIL with Jim Forbes, a multiple Emmy, ALMA, AP and Golden Mic award-winning writer, producer, correspondent and narrator; and developing the TV series FREE SKATE with producer Elizabeth (Betty) Buckley of B. Creative and choreographer Michael Masionis. In addition to screenwriting, Caitlin serves as an English teacher at an inner-city public high school in Massachusetts. Prior to education, Caitlin worked in public relations, where she fostered relationships with the press and crafted messages for companies that were delivered worldwide.
Positive affirmation for the day: I listen when my body speaks to me.
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This is exceptionally disturbing to read. These sorts of stories will continue to come out in years to come when you see the types and numbers of drugs being used today……..it doesn’t present a very rosy picture for those individuals who go down this track.
This is awful, and a powerful lesson for us all. I’m in the process of researching medications now that Drs want to put my husband on, its such a complicated world to navigate if you aren’t a medical professional.
I’ll retweet this and mention it to people I know, lets spread the word.
I just wanted to question the comment on tea tree oil…
I bathe in it almost everyday for my skin… now I’m worried!
Hi Tegan, This is Caitlin McCarthy. My comment about tea tree oil was specific to me and not a recommendation for other people. As a DES Daughter, I personally avoid items that mimic estrogenic activity in humans, because I was exposed to an abnormally high level of estrogen in utero. But it’s your call regarding the use of tea tree oil. I always recommend to everyone that they research the pluses and minuses of what they’re using. We can’t assume something is safe.
Hope this helps!
SUCH AN IMPORTANT MESSAGE IN THIS STORY..LIKE LORENZO’S OIL MADE PEOPLE AWARE, AS WILL CAITLIN MCCARTHY’S “WONDER DRUG”. IT SEEMS THE MEDIA WILL TAKE A MOVIE NARRATIVE MORE SERIOUSLY THAN THE FACTS THEMSELVES..WHATEVER IT TAKES TO GET THESE FACTS OUT THERE.
Thank you for raising awareness of DES. Do I know someone who is DES exposed? Yes, I have been contacted by hundreds of DES exposed people in Australia where it is estimated up to 740,000 mothers, daughters and sons are DES exposed.How unfortunate it is that the Australian government is running with a policy that raising DES awareness will evoke community anxiety. Indeed, it is more anxiety provoking not to be informed about it. If anyone affected needs Australian resources, just google search DESNSW.and/or phone the DES Action group on 02 98754820.
Jess,
Thanks for this post. It it so sad.
We keep talking about Big Pharma and the profits made from the suffering of their “medicine”.
but without the complete picture of how the system became focused on money rather than life.
There is a book I want to share with both you and your readers, ” Racketeering in Medicine- The Suppression of Alternatives” by James P. Carter, MD, PHD. ( Chapter 3 is about Gerson, BTW).
It deals with the leaders of the current global system and how it all was orchestrated.
The books is out of print. I got it on Amazon used. Let me know if you can’t get it. It is really eye opening.
xox
sandra
I just had a look through the book pages available on the net. I suggest Jess has a closer look as it is taking about chelation therapies to remove heavy metals from the body. I am sure to buy the book. Thank you Sandra for recommending.
Wow, what a disturbing story. It’s crazy how many things that we once believed to be irrefutable medical doctrine are now being exposed as less-than-ideal for our health, and in some cases, like with DES, to be downright harmful.
It’s so important to get stories like this out there…
My mother was given a hormone implant in the fifties to prevent miscarriage—-could this be the same thing? I have just had a recurrence of breast cancer.
Liz (UK)
Hello Liz,
I have recently found infomations about DES forms in France. Implants did exist during the fifties. I don’t know if it was also the case in UK.
But, even if you are a “des daughter”, you have to know that it doesn’t change the breast cancer’s treatments you need.
(excuse me for my english langage)…
Bon courage à vous,
Nathalie
Thanks Nathalie and your English is excellent.
Best wishes.
Elizabeth
I am shocked. Sent this my friends and family.
What I also didn’t know was the comment made about lavender and tea tree. I thought Tea Tree was great for cleaning and healing. And lavender is always recommended to help you sleep…
Hi Lisa, Caitlin McCarthy here. My comments about lavender and tea tree oil were personal to me and not a recommendation for others. I always recommend that people research products and make up their own minds about the pluses and minuses of usage. This link details how lavender and tea tree oils may cause breast development in boys: http://www.nih.gov/news/pr/jan2007/niehs-31.htm.
As I mentioned in my interview, both lavender and tea tree oils mimic estrogenic activity in humans, which is why I personally avoid them. (I was exposed to an abnormally high level of estrogen in utero.) But it’s important for you to make up your own mind after research. Hope this helps!
Caitlin mentions that she chooses to avoid soy. I am a DES daughter and whenever I eat soy linseed bread I experience abnormal vaginal bleeding. When I told my GP, she said this happens also in menopausal women on HRT who eat too much soy. My experience with soy seems to fit in with the notion that DES daughters have a permanently superimposed oestrogen level in their bodies and that they need to be careful when it comes to taking extra hormones.
Wow…that’s quite a disturbing read…thank you for the info. As a 38 year old diagnosed with breast cancer it may be well worth checking if I have any traces in my body, how would I do that?
I had no idea about tea tree oil and lavender, so will look into that further, thanks again for informative post.
Unfortunately there isn’t a “test” to determine DES exposure. However, there are certain telltale physical signs of exposure, such as a T-shaped uterus and cockscomb cervix.
In the U.S., the medical records of DES Mothers were destroyed long ago, as doctors aren’t required to hold onto them indefinitely. For people born between 1938-1971 in the U.S., it is highly likely DES was prescribed, especially if there were problems with the pregnancy or a previous miscarriage. Thus individuals who suspect exposure should become a personal detective by assessing health problems such as infertility and cancer. If those issues start adding up, then it’s a good possibility that DES is part of their personal health history. They should take precautions such as staying current on the latest DES research, and being vigilant about proper health screenings such as having annual mammograms and the special DES Pap/pelvic exam every year.
People born between 1938-1971 in the U.S. and up until the mid-1980s in other parts of the world (including Australia) should also ask their mothers if they experienced any issues during their pregnancies (such as spotting or bleeding), and whether they were prescribed DES or a prenatal vitamin. If their mother is no longer alive, sometimes asking an aunt or friend of the mother will reveal information about pregnancy history that might be helpful.
You can also use this interactive guide to assess whether you may have been exposed to DES in utero: http://www.cdc.gov/des/consumers/guide/index.html
Hope this helps!
How tragic and disturbing. Year or so ago I went to see a top specialist for menopause in Melbourne. Straight away he suggested HRT. He did not want to consider or discuss any alternatives. He also asked about contraception pill and was surprised when I said that I took a pill for very few months when I was in nineteen and never ever again. He asked: Why? Because it did not feel natural, was my answer. Over the recent years I have developed very, very cynical view of medical profession (including trusted GP…). Follow your gut feeling – always.
Really good info here for women who are unaware of DES. Caitlin states she takes precautions and has a mammogram every year. Caitlin, did you do any research on mammograms? There is research out there that states that mammograms actually can cause breast cancer. Have a read of some of Dr Mercola’s info on mammograms.
DES Daughters over age 40 are nearly two times as likely as unexposed women to get breast cancer. For DES Daughters older than age 50 the relative risk is estimated to be even higher. http://www.desaction.org/documents/Article-BreastCancer_000.pdf
DES Action recommends that DES Daughters have an annual breast exam every year: http://www.desaction.org/faq.htm
wow…. how very disturbing. my younger sister died at 33 of unknown primary and my mother died young of breast cancer. we all have very odd health… we know mum was alcoholic and smoker through her pregnancies and refused to speak of her health. i wonder…..
i will never know. BUT! now i will be more vigilant with my body! Passing this onto my sister who does have a t-shaped uterus.
Thanks for the article and letting us know!
There are so many lessons from this case that we should all learn. Off the top of my head I can immediately think of the fluoridation of water. Also, never, ever trust the FDA to protect you. Do your own research.
Thank you for posting this. I am a DES daughter. Both my mother and I are breast cancer survivors and I have had a preventative total hysterectomy. I knew I was a DES daughter since I was in my early twenties. I am now forty-nine. When informing my gyno so long ago he told me all DES could cause was infertility problems. It took me eight years to finally have my only child. I trusted him to know the facts. I was his patient for twenty-six years when I was diagnosed with breast cancer. In all those years he never mentioned the 30% increased chance of breast cancer or anything about a clear cell cervical cancer. It wasn’t until I went to Johns Hopkins in Baltimore that I began to learn what to do to take care of myself. I still need more education. I know to stay away from soy but I didn’t know about lavendar or tea tree oil. I realize my mitochondria? have been damaged. Sometimes I feel that nothing I do will help my situation or health. My poor mother who is a 34 year bc survivor feels so guilty for taking DES. She believed was going to the best baby doctor in town in the 1960′s. He prescribed it like candy.
I’m just totally disgusted that DES is swept under the rug.
Is there a website I can refer to for a list of estrogen mimicking plants, products, etc?
Thank you! Sometimes I feel so alone in this. I would be interested in learning what is the best diet for a DES affected person?
I suggest contacting DES Action for information: http://www.desaction.org/contact.htm
You can email them if you’re based in Australia. They’ll answer!
Great Article! I thought I would post this analysis of the Lavender / Tea tree report. This article was written by Robert Tisserand, one of the worlds leading essential oil experts. Happy reading
http://www.naha.org/articles/Tisserand,%20R.%20Gynecomastia2_2007.pdf
Male workers who handled DES in manufacturing plants back in the day developed breasts. They had to undergo testosterone treatment in order to make the breasts go away.
I checked out Robert Tisserand’s website. No offense to him, but he is not a research scientist. He is a former massage therapist who tracks published research and serves as a consultant on product development: http://roberttisserand.com/about/robert-tisserand/
I personally trust the NIH when it comes to lavender and tea tree oil: http://www.nih.gov/news/pr/jan2007/niehs-31.htm
As I always say, everyone is entitled to their opinion. Do your research and follow your gut.
My wife is a DES daughter (43 yrs old). She knows the cancer implications. However, she has had severe autoimmune problems for over a decade which remain largely unidentified. You mentioned a possible link between DES and autoimmune. Who’s doing this research and what are the latest findings?
DES Action USA can provide more info about the autoimmune research. Part of their mission is to track it:
[email protected]
Hope this helps!