Endometriosis: Symptoms, Causes, and What Really Helps
About one in ten women is affected by endometriosis, yet it often takes years until a diagnosis is made. This article explains what endometriosis is, why it is so heavily dependent on estrogen and progesterone, what typical symptoms are, and what conventional and complementary natural approaches are currently being discussed.
Key takeaways
Endometriosis affects around 10% of women of reproductive age and occurs when tissue similar to the uterine lining grows outside the uterus. It is highly estrogen-dependent, often combined with progesterone resistance. Conventional hormone therapies and surgeries usually only alleviate symptoms, while the the root causes remain. Anti-inflammatory diets, polyphenols such as quercetin, curcumin, and EGCG, as well as micronutrients like omega-3, NAC, vitamin D, and zinc are being researched as supplementary treatments.
The Complete Endometriosis Guide
This is our central guide to endometriosis: an overview of causes, symptoms, hormones, and treatment. We delve deeper into individual topics in separate articles, which you can find further down and at the end of the page.
Approximately one in ten women is affected by endometriosis, around 200 million worldwide. Nevertheless, it takes an average of years to diagnose, because the symptoms are varied and often dismissed as "normal" period pain. This article explains what endometriosis is, the role of estrogen and progesterone, and the conventional medical and complementary strategies currently discussed.
How Endometriosis Develops
Normally, the uterine lining builds up and breaks down with each cycle. In endometriosis, this process occurs in places outside the uterus. The most widely accepted explanation is retrograde menstruation: menstrual blood flows back through the fallopian tubes into the abdominal cavity, where endometrial cells can implant. However, since this phenomenon also occurs in many women without endometriosis, other factors must play a role, including genetic predisposition, immune system dysfunction, and epigenetic changes that promote the survival and growth of tissue outside the uterus.
What makes endometriosis special is its strong estrogen dependence. Estrogen not only stimulates the growth of the tissue but also increases the release of pro-inflammatory messengers like cytokines, which drive pain and tissue changes. This explains why many therapies specifically lower estrogen levels or pause the hormonal cycle to alleviate symptoms.
Did you know that…
...endometriosis has been observed in very rare cases in men who received estrogen-based hormone therapy? This highlights how central estrogen is as a driver of the disease.
How common is endometriosis?
About 10% of women of childbearing age are affected. In women with chronic pelvic pain or infertility, the incidence rises to up to 50%. Despite this prevalence, endometriosis is often diagnosed late because the symptoms range from severe menstrual pain to chronic pain and digestive problems and are easily misinterpreted.
Conventional or natural? An initial overview
Treatment depends on the severity and affected areas. Broadly, conventional and complementary natural approaches can be distinguished, which are not mutually exclusive but are often combined. The following overview categorizes them.
Approach
How it works
Classification
Hormone therapy (pill, GnRH agonists)
Lowers estrogen levels or pauses the cycle, reduces the activity of lesions.
Effective against symptoms, possible side effects like hot flashes or bone density loss.
Long-acting progestins (IUD, depot)
Relieve pain as effectively as the pill, often with fewer subsequent surgeries.
Primarily contraceptives, relieve symptoms but do not treat the underlying causes.
Surgery (laparoscopy)
Precisely removes visible lesions.
Can provide quick relief, but recurrence rate is high because the hormonal cause remains.
Anti-inflammatory diet & Omega-3
Associated with modulating pro-inflammatory processes.
Complementary, well-tolerated, evidence is growing.
Polyphenols & micronutrients
Investigated in studies on inflammation, oxidative stress, and tissue.
Promising research approach, not yet conclusively proven.
Conventional procedures often quickly relieve symptoms. The hormonal and inflammatory cause remains, which is why long-term strategies consider both.
Did you know that...
… many women with endometriosis have progesterone resistance? The tissue responds less effectively to progesterone, which normally slows down the growth of the mucous membrane, allowing the tissue to continue to spread.
Symptoms and Signs of Endometriosis
The symptoms vary greatly from woman to woman, which makes diagnosis difficult. Typical signs include:
Very painful menstruation(dysmenorrhea) that goes beyond normal period pain.
Pain during sexual intercourse(dyspareunia).
Chronic pelvic painthat can last throughout the entire cycle.
Digestive problems and pain during bowel movements, especially during menstruation.
Unfulfilled desire to have children, which is particularly distressing for many affected individuals.
If such symptoms occur, it is worth talking to a doctor. Ultrasound and, in some cases, laparoscopy are used for clarification.
Endometriosis and Progesterone Resistance
Progesterone is primarily produced by the corpus luteum after ovulation. It prepares the uterine lining for possible implantation and balances the effect of estrogen by inhibiting mucosal growth.
However, in many women with endometriosis, the affected tissue responds less well to progesterone, a so-called progesterone resistance, triggered by a reduced expression of progesterone receptors. As a result, the inhibitory effect is absent: the tissue continues to grow, symptoms worsen, and the disease progresses. The interplay of estrogen dominance and progesterone resistance is considered a central driver of endometriosis.
Why Conventional Therapies Often Only Address Symptoms
Hormone therapies such as the pill or GnRH agonists suppress estrogen production, thereby reducing the activity of the lesions. They are effective but can cause side effects such as hot flashes, bone density loss, and other menopausal-like symptoms, which limit long-term use.
Operations specifically remove visible lesions. However, recurrence rates are high: according to one study, the reoperation rate within five to seven years is 54 to 58%. The reason is the systemic and hormonal nature of the disease. Visible tissue can be removed, but the underlying hormonal dependence and recurring inflammatory processes remain. As long as estrogen influence and hormonal imbalances persist, there is a high risk that endometriosis will return. Long-term strategies therefore combine hormonal and anti-inflammatory measures.
Long-acting progestin preparations such as depot injections or hormonal IUDs relieve pain as effectively as the pill and less often require repeat surgery. It remains important: these are primarily contraceptives that alleviate symptoms, not the deeper causes such as hormonal imbalance and chronic inflammation.
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Natural approaches and supplements being researched
In addition to established therapies, natural approaches are becoming a focus of research, especially nutritional strategies and bioactive plant compounds, which are being investigated in connection with hormonal processes and inflammatory reactions. A diet rich in omega-3 and antioxidants is linked to inflammation-related mechanisms in scientific papers.
Polyphenols in the focus of research
Polyphenols are bioactive compounds from plant-based foods such as berries, citrus fruits, onions, turmeric, and green tea. They are discussed in connection with oxidative stress, inflammation, cell growth, and angiogenesis, all mechanisms that also play a role in endometriosis. Some polyphenols act as phytoestrogens and can potentially interact with estrogen receptors, which is particularly investigated in an estrogen-dependent disease.
Quercetinfrom onions, apples, berries, and peppers is being investigated in preclinical and initial clinical studies for its effects on inflammatory markers, oxidative stress, and tissue changes. Animal studies suggest an influence on inflammatory parameters and tissue growth, without a negative effect on the body's own hormone production. The data available is limited and not conclusive.
Curcuminfrom turmeric is being researched for its antioxidant and anti-inflammatory properties. Studies describe effects on signaling pathways related to inflammation, cell growth, and angiogenesis, as well as a possible modulation of estrogen signaling pathways. A clinical study in Vienna is currently investigating connections to pain and quality of life.
Apigeninfrom parsley, celery, apples, and oranges is described as having antioxidant and anti-inflammatory properties. Preclinical studies investigate effects on inflammatory signaling pathways and tissue changes. There is no official health claim.
EGCG from green teais a powerful antioxidant. In studies, it inhibited the growth and spread of endometriotic tissue and could reduce the formation of new blood vessels via the VEGF factor. Initial clinical studies are testing high-purity green tea extract in affected individuals.
These observations are considered promising in the literature, but not yet conclusive. Larger clinical studies are needed to clarify the role of polyphenols in endometriosis.
Micronutrients being investigated in the context of endometriosis
Omega-3 fatty acidsare known for their anti-inflammatory properties and modulate the production of prostaglandins, a mechanism also targeted by pain relievers such as ibuprofen. The ratio of omega-3 to omega-6 appears to be relevant.
N-acetylcysteine (NAC)supports glutathione metabolism and modulates oxidative stress. In clinical studies, participants reported less pain and there were indications of reduced lesion size. NAC is also contained in Hormonic Base.
Vitamin D3plays a role in the immune system and inflammation-related signaling pathways. Women with endometriosis tend to have lower vitamin D levels.
Zincis part of antioxidant defense systems. Affected individuals often have low zinc levels; supplementation could modulate inflammation and oxidative stress.
Vitamins C and Eare often investigated in combination and can reduce markers for oxidative stress. Studies have described a reduction in endometriosis-associated pain.
These substances can complement a holistic approach. They do not replace a medical diagnosis or treatment, and the evidence varies in strength depending on the substance.
Take-Home Messages
Widespread: approximately 10% of women of childbearing age are affected; diagnosis often comes late.
Hormonally driven: endometriosis is strongly estrogen-dependent, often combined with progesterone resistance.
Diverse symptoms: severe menstrual pain, chronic pelvic pain, and digestive problems can be indicators.
Conventional therapies usually relieve symptoms: the deeper causes often remain, which promotes recurrence.
Natural approaches are gaining importance: anti-inflammatory diet with omega-3, polyphenols, and antioxidants as a supplement.
Our medical team will support you in understanding the connection between endometriosis, estrogen, and progesterone. Book a free 15-minute initial consultation.
Endometriosis is one of the most complex diseases in gynecology, and the path to diagnosis and treatment is long and frustrating for many. However, research is progressing, and there are increasing options to alleviate symptoms and slow progression. Whether conventional or complementary natural medicine: it is crucial that you inform yourself, take charge of your health, and do not resign yourself to unnecessary suffering.
Certain polyphenols, vitamins, and micronutrients can usefully complement conventional approaches, even if larger studies are still pending. If you want to clarify the connection between your symptoms and your hormones, the medical team at Hormonic Care will support you.
Endometriosis is a chronic, estrogen-dependent condition in which tissue similar to the lining of the uterus grows outside the uterus, for example, on the ovaries, fallopian tubes, intestines, or bladder. This tissue thickens, bleeds during the menstrual cycle, and can cause inflammation, scarring, and adhesions. Severe, recurring pelvic pain is typical. Approximately one in ten women is affected.
What role do hormones play in endometriosis?
Endometriosis is highly estrogen-dependent: estrogen promotes the growth of the tissue and amplifies pro-inflammatory messengers. In addition, many sufferers have progesterone resistance, meaning the tissue responds less effectively to progesterone, which normally inhibits growth. Other factors include genetic predisposition, immune system dysfunctions, and epigenetic changes. Retrograde menstruation is considered a possible contributing cause.
Welche Symptome deuten auf Endometriose hin?
Typisch sind sehr schmerzhafte Menstruationen, die über normale Regelschmerzen hinausgehen, Schmerzen beim Geschlechtsverkehr, chronische Unterleibsschmerzen über den ganzen Zyklus, Verdauungsprobleme und Schmerzen beim Stuhlgang vor allem während der Periode sowie unerfüllter Kinderwunsch. Die Beschwerden sind sehr unterschiedlich, weshalb die Diagnose oft spät gestellt wird. Bei solchen Symptomen lohnt sich die Abklärung über Ultraschall und gegebenenfalls eine Bauchspiegelung.
Heilt eine Operation die Endometriose?
Eine Operation entfernt sichtbare Herde gezielt und kann schnell entlasten, heilt die Erkrankung aber meist nicht. Einer Studie zufolge liegt die Reoperationsrate innerhalb von fünf bis sieben Jahren bei 54 bis 58 %. Grund ist die hormonelle Natur der Erkrankung: Sichtbares Gewebe lässt sich entfernen, die zugrunde liegende Östrogenabhängigkeit und die Entzündungsprozesse bleiben. Deshalb kombinieren langfristige Strategien Operation oder Hormontherapie mit entzündungshemmenden Maßnahmen.
Können Ernährung und Mikronährstoffe bei Endometriose helfen?
Eine entzündungsarme Ernährung mit viel Omega-3 und Antioxidantien wird in der Forschung mit der Modulation entzündlicher Prozesse in Verbindung gebracht. Polyphenole wie Quercetin, Curcumin, Apigenin und EGCG aus grünem Tee werden in präklinischen und ersten klinischen Studien untersucht, ebenso Mikronährstoffe wie NAC, Vitamin D3, Zink sowie Vitamin C und E. Die Evidenz ist je nach Stoff unterschiedlich stark und nicht abschließend. Diese Ansätze können konventionelle Therapien ergänzen, ersetzen sie aber nicht.
Scientific Sources
VanBuren W et al. (2024). Imaging and diagnosis of endometriosis.
Rogers PAW et al. (2009). Priorities for endometriosis research. Reprod Sci.
MacLean JA et al. (2022). Progesterone resistance in endometriosis.
Tassinari V et al. (2022). Polyphenols and endometriosis: mechanisms and evidence.
Golabek A et al. (2021). Polyphenols in the management of endometriosis.
Bahat PY et al. (2022). Quercetin supplementation in endometriosis.
Park S et al. (2019). EGCG and angiogenesis in endometriosis.
Signorile et al. (2018). Antioxidants and oxidative stress in endometriosis.
About the Author
Lisa Maria Emmer
Physician & Chief Medical Officer · Hormonic
Lisa Maria Emmer is co-founder and medical director at Hormonic. She supports women with hormonal problems every day and specializes in cycle health, PCOS, and menopause.
Note: This article is based on current scientific studies, reviews, and meta-analyses and was prepared with the utmost care. It is for informational purposes only and does not replace medical advice, diagnosis, or treatment. Mentioned dietary supplements are not a substitute for a balanced diet and a healthy lifestyle. If you have existing medical conditions, are pregnant or breastfeeding, or are taking medication, always consult a doctor before taking any dietary supplements.
