If you have been diagnosed with moderate to severe endometriosis, you may already be thinking about pain relief, next steps, and how to get your life back. But there’s another important question many people don’t hear early enough:
How could endometriosis—and its treatment—affect my future fertility?
That’s egg freezing can play an important role, especially before surgical treatment.
How endometriosis can affect fertility and ovarian reserve
Endometriosis occurs when tissue similar to the uterine lining grows outside the uterus, often on the ovaries, fallopian tubes, or other pelvic structures. Over time, this tissue can cause chronic inflammation, scarring, and cysts called endometriomas.
These changes can impact fertility in several ways:
- Chronic inflammation can interfere with egg quality and fertilization
- Scar tissue may distort pelvic anatomy or block Fallopian tubes
- Endometriomas on the ovaries are associated with lower ovarian reserve
- Hormonal and immune changes may make implantation more difficult
Not surprisingly, endometriosis is found in up to 30–50% of people who experience infertility — far higher than in the general population.
Even without symptoms, fertility can be affected quietly and progressively.
Surgical treatment for endometriosis may reduce egg quantity
Laparoscopic surgery is often recommended to:
- Reduce pelvic pain
- Remove endometriosis implants or endometriomas
- Improve the chances of natural conception
And for many patients, surgery is absolutely the right choice.
However, it’s important to know that any surgery on the ovaries carries a risk. Removing endometriomas can unintentionally remove healthy ovarian tissue, leading to a decrease in egg count — sometimes permanently.
This is why fertility specialists increasingly recommend discussing egg freezing before endometriosis surgery, particularly for patients with:
- Moderate to severe disease
- Ovarian endometriomas
- Bilateral cysts
- Prior or anticipated repeat surgeries
Benefits of egg freezing before endometriosis treatment
Egg freezing (also called oocyte cryopreservation or fertility preservation) allows you to preserve eggs before they may be affected by disease progression or surgical intervention.
Research shows that fertility preservation is most effective when done before ovarian surgery, when egg quantity and quality are typically higher.
Freezing eggs prior to endometriosis treatment can:
- Preserve more eggs than waiting until after surgery
- Protect fertility options if ovarian reserve declines
- Reduce pelvic pain caused by the endometriosis
- Reduce pressure to rush pregnancy decisions
- Improve chances of naturally occurring pregnancy
- Create flexibility for future family planning
Egg freezing does not mean you will need IVF — but it keeps that option available if you do.
How egg freezing works
Egg freezing uses vitrification, a rapid freezing method that preserves eggs at very low temperatures for future use. When you’re ready to build your family, these eggs can be thawed and used in IVF. Survival and fertilization rates after thawing tend to be strong — especially when eggs are frozen at a younger age.
Egg survival and fertilization rates after thawing are strong, especially when eggs are frozen at younger ages. Success depends on:
- Age at the time of freezing
- Number of eggs frozen
- Ovarian reserve before treatment
Pregnancy rates are highest when eggs are frozen before age 37, but egg freezing may still be appropriate at other ages depending on your situation.
FAQs: Egg Freezing and Endometriosis
A Thoughtful, Personalized Approach Matters
Endometriosis is complex, and no two patients are the same. The right fertility plan depends on your symptoms, ovarian reserve, timing of surgery, your family-building goals, and financial considerations.
At Shady Grove Fertility, our fertility specialists work closely with you to make informed, confident decisions—without pressure or panic.
Looking Ahead
If you’ve been diagnosed with endometriosis, thinking about egg freezing now means you’re giving yourself choices for tomorrow.
Egg freezing before endometriosis treatment can be a powerful tool, not because it promises certainty, but because it protects possibility.
Medical contribution by Valerie Libby, M.D., MPH
Valerie Libby, M.D., MPH, FACOG, earned her medical degree from the University of Texas Health Science Center at San Antonio. She graduated from the University of Texas at Austin Honors Program studying Psychology and Spanish. She then earned a Masters in Global Public Health from George Washington University where she served as a fellow in Kenya for the Global Health Service.
Editor’s Note: This post was originally published in April 2016 and has been updated for accuracy and comprehensiveness as of March 2026.
