Is Endometriosis Genetic? What the Heredity Research Shows

Is endometriosis genetic? Short answer: yes, there’s a strong hereditary component, but it’s not a single-gene condition like cystic fibrosis or Huntington’s. Multiple gene variants interact with environmental and hormonal factors to determine risk. This article covers what the heredity research actually shows and what it means if endometriosis runs in your family.

For background see What is Endometriosis? and What Causes Endometriosis?.

The headline numbers

• 5-7× increased risk if you have a first-degree relative (mother, sister, daughter) with endometriosis
• ~50% heritability estimated from twin studies — meaning roughly half the variation in who gets endometriosis is explained by genetics
• 40+ gene regions identified by recent genome-wide association studies (GWAS) as linked to endometriosis risk

For comparison: this heritability is similar to type 2 diabetes and stronger than most cancers but weaker than single-gene Mendelian disorders.

It’s polygenic, not monogenic

There is no single “endometriosis gene.” Instead, many gene variants each contribute a small amount of risk. The most-studied gene families involve:

• Inflammation and immune function: genes that regulate how the body handles foreign or misplaced tissue
• Hormone receptors and metabolism: variations in estrogen and progesterone signaling pathways
• Pain perception: genes involved in how chronic pain is processed
• Cell adhesion and migration: involved in how endometrial-like cells might implant outside the uterus

Some of the gene regions identified by GWAS also link endometriosis to other conditions — migraine, autoimmune disorders, and certain inflammatory bowel conditions — helping explain the higher rates of comorbid conditions seen in endometriosis patients.

What family history actually means

If your mother, sister, or aunt has endometriosis, your risk is significantly elevated — but it’s not a sentence. Most people with a family history don’t develop the condition. And conversely, plenty of people develop endometriosis without any known family history (the genetic component is one piece of a multifactorial puzzle).

Practical implications of family history:

• Earlier awareness: Knowing the family history makes you and your healthcare provider more likely to consider endometriosis at the first signs of unusual menstrual pain
• Earlier symptom tracking: If close relatives have endometriosis, start a symptom diary at the first signs of debilitating periods
• Earlier specialist referral: Mention family history explicitly to your gynecologist; it should accelerate the diagnostic workup
• Lower delay: The 7-10-year average diagnostic delay is significantly shorter for people with a known family history — because the suspicion is raised earlier

Can endometriosis genetics be tested?

Not in a clinically useful way. While GWAS has identified many associated gene variants, no single variant or combination is strong enough to be used as a diagnostic test. Direct-to-consumer genetic tests (23andMe, etc.) sometimes report polygenic risk scores for endometriosis, but these have limited clinical utility — they can suggest elevated risk but can’t diagnose the disease.

The clinically meaningful version of “genetic testing” for endometriosis is much simpler: ask your female relatives. A thorough family history is more useful than any current genetic test.

If endometriosis runs in your family

Three practical moves:

1. Talk to female relatives: ask about heavy periods, severe period pain, fertility struggles, and any endometriosis diagnoses. Many older relatives may have suffered without ever receiving a diagnosis
2. Track your cycle from young: even before symptoms emerge, knowing your cycle patterns is useful
3. Take symptoms seriously early: if you have a family history and your periods are debilitating, don’t accept “that’s normal” as an answer. Use the free symptom screener to structure your concerns before the doctor’s appointment

Can endometriosis be prevented?

Currently no. Genetic risk can’t be modified, and we don’t have an intervention that prevents endometriosis from developing. What we can change is how quickly endometriosis is recognized and treated — and early treatment significantly changes the disease course and quality of life. See How is Endometriosis Diagnosed? and Endometriosis Treatment.

Frequently asked questions

If my mother has endometriosis, will I get it?

Not necessarily — but your risk is 5-7 times higher than someone without a family history. Many people with a strong family history don’t develop endometriosis. What family history really does is make the diagnosis faster if symptoms do develop, because the suspicion is raised earlier.

Can I do a genetic test for endometriosis?

Not in a clinically useful way. GWAS has identified 40+ associated gene variants, but no test exists that can confirm or rule out endometriosis based on genes alone. A detailed family history is currently more useful than commercial genetic testing.

Does endometriosis skip generations?

It doesn’t follow simple inheritance patterns like recessive single-gene disorders, so it can “appear” to skip generations. But the underlying genetic risk doesn’t actually skip — it just doesn’t always express. Multiple gene variants combined with environmental factors determine who actually develops the disease.

Should I be screened earlier if my mother had endometriosis?

There’s no formal screening program for endometriosis, even with strong family history. What you can do: start cycle and symptom tracking early, mention family history explicitly to your gynecologist, and seek prompt evaluation if you have debilitating periods. Early recognition is the most effective “screening” we have.

Can the genetic component skip female-to-male trans family members?

Genetic risk doesn’t depend on gender identity — it depends on having the genes plus a uterine environment in which endometriosis can develop. Trans men who haven’t had a hysterectomy can develop endometriosis. Trans women without a uterus cannot, but rare cases of endometriosis-like tissue in unusual locations exist.

Sources

1. Rahmioglu N et al. The genetic basis of endometriosis and comorbidity with other pain and inflammatory conditions. Nat Genet 2023;55:423–436.
2. Saha R et al. Heritability of endometriosis. Fertil Steril 2015;104:947–952.
3. Zondervan KT, Becker CM, Missmer SA. Endometriosis. N Engl J Med 2020;382:1244–1256.
4. ESHRE. Endometriosis Guideline. 2022.