397 - Endometriosis and adenomyosis: diagnosis, fertility, reproductive aging, & emerging treatments

Episode Overview

• Understanding Uterine Pathology and Chronic Pelvic Pain: This episode provides a comprehensive guide to understanding major uterine conditions—primarily endometriosis, adenomyosis, and fibroids—clarifying their distinct anatomical locations, mechanical impacts, and physiological differences.
• The Neurology of Pain and Central Sensitization: It explores why surgical removal of tissue does not always cure chronic pain, shifting the focus to a complex, three-tiered neurological model where prolonged inflammation permanently rewires the central nervous system.
• The Evolutionary Mismatch and Diagnostic Delays: The conversation highlights the stark contrast between modern reproductive patterns and ancestral biology, illustrating how a fourfold increase in lifetime menstrual cycles drives disease prevalence while cultural taboos cause devastating diagnostic delays.
• Navigating Fertility, Aging, and IVF: It demystifies the biological realities of the "IVF funnel," the J-curve of embryo aneuploidy by age, and the critical clinical order of operations required to preserve ovarian reserve when managing complex pelvic pathologies.

Key Concepts

• Anatomy of the Uterus: To understand pelvic pathologies, one must understand the three uterine layers: the serosa (outer protective membrane), the myometrium (middle muscular layer responsible for contractions), and the endometrium (the highly dynamic inner lining that thickens and sheds monthly).
• Endometriosis vs. Adenomyosis vs. Fibroids: Endometriosis is characterized by endometrial-like tissue growing outside the uterus (on ovaries, fallopian tubes, bowel, or bladder). Adenomyosis occurs when this tissue invades the muscular wall (inside the myometrium). Fibroids are benign, well-circumscribed muscular tumors (myomas) that grow in various locations of the uterine wall.
• The Evolutionary Mismatch (Retrograde Menstruation): While roughly 90% of women experience retrograde menstruation (menstrual backflow through the fallopian tubes), historically women had only ~100 lifetime ovulatory cycles due to frequent pregnancies and prolonged breastfeeding. Modern women experience up to 400 cycles, exposing their pelvic cavities to four times as much retrograde tissue and driving rising disease rates.
• Progesterone Resistance and Estrogen Dominance: Both endometriosis and adenomyosis lesions exhibit severe progesterone resistance and estrogen dominance. The lesions overexpress the enzyme aromatase (allowing them to produce their own estrogen) while downregulating progesterone receptors, making standard progesterone treatments less effective.
• The Multilayered Nature of Endometriosis Pain: Pelvic pain is driven by three distinct mechanisms: Nociceptive pain (direct inflammation and tissue damage from the active lesion), Neuropathic pain (lesions physically invading and irritating local pelvic nerves), and Noplastic pain/Central Sensitization (where the central nervous system has been permanently rewired by chronic pain signals, registering severe pain even after all physical lesions are surgically removed).
• The "Burglars and Alarms" Analogy: In this neurological framework, the lesions are "burglars," surgery is removing the burglars, and hormonal therapy is locking the doors. However, if the burglars have been in the house for years, the home security alarm (the nervous system) has been ringing continuously; eventually, the wiring changes, and a gentle gust of wind (normal digestion or bladder filling) triggers the full, deafening alarm.
• The Inefficiency of Human Reproduction: Human reproduction is highly inefficient, characterized by massive cell loss (a woman loses ~1,000 oocytes monthly to ovulate just one). IVF does not improve the biological quality of a woman's eggs; it merely increases the quantity of embryos available for selection to counteract these steep natural losses.
• The J-Curve of Embryo Aneuploidy: The rate of chromosomal abnormalities (aneuploidy) in blastocysts follows a J-curve, not a linear progression. The biological "sweet spot" for chromosomal normalcy is around age 25; very young women (under 20) and older women experience elevated rates of aneuploidy.
• The Endometrioma Dilemma and Ovarian Reserve: Surgical removal of ovarian endometriomas (cystectomy) is highly damaging to fertility because these pseudocysts are tightly fused to the ovarian cortex. Stripping the cyst wall inevitably removes healthy, adjacent primordial follicles, reducing Anti-Müllerian Hormone (AMH) levels by 40% to 50%.
• Chemical Suppression in Adenomyosis Management: Because adenomyosis cannot be surgically removed without performing a hysterectomy, managing infertility requires 2 to 4 months of profound hormonal suppression (using GnRH agonists/antagonists) prior to a frozen embryo transfer (FET). This downregulates estrogen, calms hyper-peristaltic uterine contractions, and dramatically improves implantation and live birth rates.

Quotes

• At 0:01:18 - "Endometriosis is a chronic disease where an endometrial-like tissue, very similar to the endometrium, is outside the uterus." - Explains the fundamental anatomical definition of endometriosis.
• At 0:02:11 - "If you have endometriosis, you have a chance of around 40% of being infertile." - Highlights the strong causal link between endometriosis and infertility.
• At 0:03:43 - "We have about 50% of heritability. If you have a first-degree relative with endo, you have about a seven times higher chance of having endometriosis." - Establishes the powerful genetic risk factor associated with the disease.
• At 0:06:37 - "A woman back then [200 years ago] would have around 100 ovulatory cycles in her lifetime... If you compare that to a modern woman, it's about a fourfold increase in retrograde ovulatory menstruations." - Illustrates the evolutionary mismatch of modern menstruation cycles and why endometriosis is increasingly common.
• At 0:09:03 - "We have this estrogen dependence... the endometrial lesions produce by themselves estrogen, so they overexpress aromatase... and we also have this progesterone resistance." - Explains the underlying hormonal dysfunction driving lesion survival and growth.
• At 0:13:15 - "Adenomyosis is essentially the presence of this endometrial-like tissue inside the myometrium, so inside the muscular wall." - Clearly differentiates the pathology of adenomyosis from endometriosis.
• At 0:13:17 - "Surgery can remove the burglar [the lesion]. Hormones can lock the door. But once you have this alarm system ringing year after year, the wiring changes... you can have a beautiful surgery, but still have pain." - A powerful analogy explaining "central sensitization" and why surgical removal of lesions does not always resolve chronic pelvic pain.
• At 0:25:28 - "What is causing the actual pain?" - Peter Attia, M.D., asking the fundamental question that transitions the conversation from anatomy to the complex neurology of chronic pelvic pain.
• At 0:27:01 - "Surgery can remove the burglar. Hormones can lock the door. But once you have this alarm system ringing and ringing years after years, the wiring changed, and now even a wind can trigger still the alarm." - Renato Tomioka, M.D., Ph.D., using this powerful analogy to explain nociplastic pain and central sensitization, illustrating why pain often persists even after perfect surgical excision.
• At 0:27:37 - "The delay in diagnosis and treatment of endometriosis is one of the main causes of this central sensitization." - Renato Tomioka, M.D., Ph.D., emphasizing that waiting years to treat pelvic pain permanently alters the patient's nervous system, making early intervention critical.
• At 0:28:38 - "Up to 50% to 75% of teenagers with pelvic pain... they have endometriosis." - Renato Tomioka, M.D., Ph.D., sharing a startling statistic to dispel the myth that endometriosis is exclusively a disease of older, infertile women, highlighting its prevalence in adolescents.
• At 0:31:08 - "Traditionally the diagnosis has been made with diagnostic laparoscopy... which is a big step to take. We shouldn't do that anymore." - Renato Tomioka, M.D., Ph.D. and Peter Attia, M.D., agreeing that subjecting patients to invasive surgery merely for a diagnosis is outdated, thanks to modern specialized imaging.
• At 0:38:54 - "If you do a normal ultrasound, and you don't have endometriosis in the report, it doesn't mean that you don't have endometriosis." - Renato Tomioka, M.D., Ph.D., warning against relying on standard pelvic ultrasounds, which frequently miss deep lesions and falsely reassure patients and doctors.
• At 0:39:55 - "The best will be the detailed protocol with an expert with this bowel prep to look into the pelvis." - Renato Tomioka, M.D., Ph.D., explaining that to find deep endometriosis via ultrasound, a highly specialized protocol involving bowel preparation and an expert radiologist is absolutely required.
• At 0:57:24 - "We mainly think of the mechanism [of infertility in endometriosis] as a mechanical mechanism... the tubes are compromised, so they can't pick up the oocytes, or they can't permit the fertilization inside the tube and transport the embryo back into the uterus." - Explains why surgical restoration of pelvic anatomy can be highly effective for natural conception.
• At 0:59:51 - "Clinically, endometriosis probably doesn't impair implantation." - Dr. Tomioka explaining that when high-quality donor oocytes are used, patients with and without endometriosis have similar implantation rates, showing that the disease does not inherently make the endometrium unreceptive.
• At 1:04:12 - "A 31-year-old woman has a 35% chance of aneuploidy... almost one-third of blastocysts are aneuploid." - Highlighting the surprising reality of chromosomal abnormality rates even in relatively young women, correcting the misconception that fertility issues only begin in the late 30s.
• At 1:11:15 - "The urologist performed a nephrectomy... due to endometriosis in the ureter... silent disease." - Illustrating the dangerous potential of deep infiltrating endometriosis to silently obstruct the ureter, causing hydronephrosis and the complete loss of kidney function.
• At 1:14:41 - "Estrogen can trigger adenomyosis lesions... and if you use a GnRH agonist... you then downregulate the receptor and you have this hormone suppression... which can increase implantation rate and decrease miscarriage rate." - Explaining the physiological basis for using GnRH down-regulation prior to embryo transfer in patients with adenomyosis.
• At 1:21:21 - "When you strip [endometriomas] out... you end up taking some follicles and oocytes that are healthy, adjacent to the cyst. You can reduce AMH by 40% sometimes 50%." - Explaining why surgical removal of ovarian cysts must be approached with extreme caution in women wishing to preserve their fertility.
• At 1:28:31 - "Age is the most important factor, and even doctors just don't realize it. Sometimes you see the patient with the doctor trying... to conceive naturally at 42 years old. That's a big mistake because you are just feeding this desire of natural pregnancy that is not that common at that age, and the risks are very high." - Highlighting the common clinical oversight regarding the steep decline in natural fertility with age.
• At 1:29:34 - "It's not linear. It's exponential... It's a J-curve. Very young patients can have monosomy... The sweet spot would be around 25." - Explaining that chromosomal abnormality rates in eggs actually follow a J-curve, with the lowest risk occurring around age 25.
• At 1:33:38 - "Reproduction in humans is very inefficient... You lose a thousand eggs every month... to make one. You have millions and thousands of sperm just for one to go inside and produce the embryo." - Emphasizing the natural biological waste and low efficiency inherent in human procreation.
• At 1:34:53 - "When we do IVF, we are just grouping, we are just making more embryos, but we are not increasing their quality. So if a woman is 40, you sometimes need to do much more cycles." - Clarifying that IVF is a numbers game of embryo accumulation, not a method for reversing age-related decline in egg quality.
• At 1:43:08 - "It's like a battery swap for the egg, but you are not changing the engine. The engine is the main problem. The engine is the nucleus." - Using an analogy to explain why mitochondrial replacement therapy (three-parent IVF) does not solve age-related chromosomal issues, which reside in the cell nucleus.
• At 1:44:53 - "From a longevity perspective, you can avoid this disease called infertility... you can prevent that by freezing oocytes earlier, but I think that's a problem of access right now." - Discussing egg freezing as a preventive measure for age-related infertility, limited primarily by economic access.
• At 1:51:18 - "Epigenetics... we can't control and we don't know what are the consequences. So if the couple has this natural chance, I would try naturally." - Arguing that natural conception is preferred over IVF when possible due to unknown epigenetic modifications introduced by laboratory manipulation.

Takeaways

• Screen for the "6 Ds": Clinicians and patients should evaluate pelvic symptoms using the 6 Ds diagnostic framework: Dysmenorrhea (painful periods), Dyspareunia (deep pain during sex), Dyschezia (painful bowel movements), Dysuria (painful urination), Difficulty conceiving (infertility), and Dysfunctional chronic pelvic pain.
• Reject Pain Normalization: Do not dismiss severe menstrual or pelvic pain in young women or teenagers as "normal." Early diagnosis is the single most critical factor in preventing the transition from direct physical pain to irreversible central nervous system sensitization.
• Request Augmented Imaging: Avoid relying on standard "routine" pelvic ultrasounds, which routinely miss endometriosis lesions. Insist on specialized transvaginal ultrasounds utilizing dynamic bowel-prep protocols, or a pelvic MRI interpreted by an expert radiologist.
• Deploy Multidisciplinary Therapy for Chronic Pain: For patients experiencing central sensitization, combine surgical or hormonal therapy with pelvic floor physical therapy, pain specialists, and neuromodulators (like gabapentin) to treat the "alarm system" rather than just the "burglar."
• Utilize Post-Surgical Hormonal Suppression: To prevent recurrence, pair surgical excision of endometriosis with immediate post-operative hormonal suppression (such as a levonorgestrel-releasing IUD), which reduces the annual recurrence rate by 88%.
• Recognize the Structural Nature of Endometriosis Infertility: Address endometriosis-related infertility primarily as a mechanical issue where anatomical distortion (adhesions) compromises the fallopian tubes, rather than an inherent defect in the endometrial lining itself.
• Sequence Treatment Correctly for Endometriomas: If a patient has ovarian endometriomas and wishes to conceive, always harvest and freeze eggs or embryos before undergoing a surgical cystectomy, as the surgery will damage the ovarian cortex and deplete AMH levels by up to 50%.
• Treat Adenomyosis-Induced Miscarriage Chemically: Address the hyper-peristaltic uterine contractions of adenomyosis using 2 to 4 months of GnRH agonist/antagonist therapy to suppress estrogen levels before attempting a frozen embryo transfer (FET).
• Time Egg Freezing Strategically: For optimal cost-efficiency, freeze eggs between ages 32 and 35. Freezing at 25 often results in unused storage, while freezing after 37 yields far fewer viable, euploid eggs per retrieval cycle.
• Factor in the "IVF Funnel" Realistically: Build realistic expectations for IVF by calculating steep drop-offs at every stage: from follicles recruited, to mature oocytes retrieved, to fertilized eggs, to blastocysts, and finally to euploid embryos.
• Prioritize Natural Conception When Feasible: Opt for natural conception over IVF when medically viable to avoid introducing unknown epigenetic modifications that can occur during laboratory manipulation and embryo cultivation.
• Perform Baseline Renal Screenings: Ensure that patients with deep infiltrating endometriosis receive kidney and ureter scans, as silent pelvic lesions can progress to completely obstruct the ureter, causing hydronephrosis and irreversible kidney loss without causing pain.