What if the uterus is an end organ, responding to insulin and inflammation the same way the heart, kidneys, and liver do?
Dr. Andréa Salcedo is a board-certified OBGYN (DO, MPH, FACOG) and associate professor at Loma Linda University School of Medicine whose research and clinical practice, which she calls conscious gynecology, examine gynecologic disease through a metabolic lens.
In this episode she walks through the evidence that uterine fibroids share progenitor cells with atherosclerotic plaque, why she now teaches residents that fibroids are cardiovascular disease of the uterus, and how high insulin acts at the level of the brain stem to block ovulation. The conversation also covers her clinical observations on fasting insulin thresholds by body type, the renaming of PCOS to PMOS, what hormonal contraceptives do and do not treat, the role of chronic stress and adversity in gynecologic disease, and the four insulin-resistant transitions of a woman's life.
generated summary
Personal path to metabolic gynecology
- Conventional gynecology can reduce heavy periods and fibroids to birth control and surgery without addressing why they developed.
- Infertility can persist despite a normal workup; food changes alone may not help, while leaving a highly stressful job can be followed by conception.
- Miscarriage followed by conception without an intervening period connects food, stress, inflammation, and reproduction.
- Gestational diabetes can occur despite a lean body size; even a sliver of pancake can drive glucose to about 160.
- Conscious gynecology links high insulin and inflammation with food, stress, sleep, environment, and other competing demands.
The uterus as a metabolic end organ
- The uterus belongs in the end-organ model used for other metabolic disease, beyond reducing uterine disease to "female hormones." [2]
- Uterine smooth-muscle biology and atherosclerotic plaque biology share features that connect fibroids with vascular disease. [3]
- Uterine fibroids are cardiovascular disease of the uterus, with hypertension, diabetes, and visceral adiposity as important risk factors.
- Metabolic care is not a magic bullet, and no studies show that a ketogenic or low-carbohydrate diet makes fibroids disappear.
- Menstrual-cycle length, bleeding amount, and frequency can act as metabolic vital signs because they can change as hypertension, diabetes, and other metabolic problems develop.
- Heavy bleeding can begin even when ultrasound looks normal because ultrasound shows gross structure, not microscopic endometrial and vascular function.
- After the endometrium sheds, uterine muscle and blood vessels must constrict; impaired vascular function can prolong bleeding, and calcium-channel blockers can also lengthen periods.
Insulin, ovulation, and menstrual dysfunction
- Structural pathways include the lining, fibroids, and polyps, while functional pathways include endocrine signals that alter ovulation and bleeding.
- The hypothalamus senses whether the environment is safe for reproduction, and high insulin can interfere with ovulation when stress and metabolic pressure are high.
- Prolonged irregular menstruation matters because persistent anovulation increases uterine-cancer risk.
- A single fasting-insulin threshold is incomplete: women who store energy peripherally can have higher insulin, and cycles can stop when fasting insulin rises above about 20.
- Clinical literature often uses about 10 as an optimal fasting-insulin value, but slender women can have insulin below 5 and still have metabolic disease.
- The slender-phenotype ideas are clinical musings without data; these women can have endometriosis symptoms, diabetes, heart disease, fibroids, and low insulin despite a one-hour glucose around 200.
- Pancreatic insufficiency or a personal fat threshold may be involved; "craft models" also enter the question, but whether those populations were separated by body habitus is uncertain.
- Women with high insulin were about three times more likely to have heavy periods or menstrual problems in Salcedo's study; larger studies should separate fibroids, endometriosis, polyps, and BMI. [2]
- Insulin is useful but not the whole picture: even when insulin is not high, damaging effects of hypoglycemia can remain, and HOMA-IR and similar measures may be better tests for a slender phenotype.
PMOS and a broader metabolic model
- PCOS is now Polyendocrine Metabolic Ovarian Syndrome, or PMOS, a name that better reflects the multisystem metabolic problem. [1]
- The Stein-Leventhal system is a two-of-three diagnostic system using hyperandrogenic signs, irregular periods, and polycystic ovaries; the syndrome can wax and wane and patients can be pigeonholed by the diagnosis.
- The PMOS name legitimizes checking cardiovascular and metabolic risk markers such as lipids, CRP, and insulin, especially because gynecologists often function as a woman's main medical clinician.
- PMOS is metabolically similar to a pre-diabetes warning condition; gestational diabetes can expose risk before later type 2 diabetes becomes obvious.
- In Mexican-American women, gestational diabetes can progress to type 2 diabetes within roughly 10 years; that risk can motivate early metabolic action.
- A metabolic model expands management beyond birth control and surgery to lifestyle changes, medications, and surgery based on each woman's capacity and resources.
Hormonal contraception and individualized care
- Hormonal contraceptives use synthetic hormones at levels that suppress the brain-pituitary-ovary ovulation signal; steady exposure thins the endometrium and withdrawal bleeding is usually lighter.
- Hormonal contraception is commonly used outside its approved indication for heavy menstrual bleeding, while the progesterone IUD is the hormonal contraceptive specifically FDA-approved for heavy menstrual bleeding.
- The progesterone IUD has been credited with avoiding hysterectomy in about 86% of women, making it a major option for heavy bleeding.
- Modern medicine and contraception remain necessary for some women, but others cannot use hormones or experience headaches, mood changes, depression, or libido changes.
- A natural cycle normally includes an estrogen rise around ovulation, whereas ovulation suppression removes that cyclic pattern.
Inflammation, stress, trauma, and personalized care
- The "inflammation circle" looks for drivers of inflammation and high insulin, including family history of diabetes, hypertension, or obesity, vitamins and supplements, sleep, and food aversions or intolerances.
- Food aversions can connect with prior experiences, including aversion to red meat; other factors include smoking anything, especially marijuana or vaping as major inflammatory exposures, alcohol, nightshades or lectins, snoring as nighttime choking that raises blood pressure, and starch intake.
- The assessment also includes anxiety, depression, safety at home, night or shift work, partner-relationship quality, and significant adversity or traumatic experiences.
- Adversity and trauma activate the HPA axis; under chronic stress, adrenal levels can "putter out" and become less useful to measure, while sympathetic activation can keep fight-or-flight active.
- When fight-or-flight stays active, glucose can stay up and insulin can stay up to maintain normal glycemia; investigative work identifies each person's triggers, and it is not just carbs.
- A ketogenic diet does not fix everyone; once inflammatory triggers are understood, the plan can combine lifestyle, medications, and surgery.
- Lifestyle tools include cod-liver oil for the gut microbiome, biosensors or continuous glucose monitors to identify glucose rises from food and stress, electrolytes, ketogenic or low-carbohydrate eating, avoiding foods such as nightshades, attention to sleep, and medications or surgery when needed.
- Trauma therapy, including EMDR, can also be part of the personalized approach.
- This is slow personal work and can take time, while still producing useful outcomes and satisfaction.
- Physiological threat responses cannot simply be reasoned away; autonomic pathways need physiological work with good trauma therapy.
- A couple of case write-ups involving near-resolution of endometriosis pain after this work are underway, but the data are still thin.
- Reviews linking adversity with chronic disease show statistically significant associations even when the odds ratios are not large.
Perimenopause, menopause, and integrated women's health
- Puberty, pregnancy, lactation, and perimenopause are normal transitions in which insulin resistance changes.
- As estrogen falls around menopause, fat distribution shifts from hips and thighs toward the abdomen, increasing inflammatory visceral fat and insulin resistance; estrogen is metabolically protective.
- The Women's Health Initiative tested whether estrogen plus progesterone protected against cardiovascular disease, using older postmenopausal women because heart attacks, strokes, and clots are rarer in younger women. [4]
- Synthetic hormones given after women were already through the transition slightly increased clot risk in this setting, and the resulting fear of hormone therapy came from an interpretation of the study that was incorrect. [4]
- Reproductive and metabolic health are inseparable from longevity; modern overload, comparison, work pressure, and constant stimulation can exceed what female biology can sustainably absorb.
- Creating more space, reducing overload, slowing down, and being intentional can help women care for metabolic and reproductive health and give their symptoms greater biological validity and legitimacy.
References
- [01:12] Polyendocrine metabolic ovarian syndrome, the new name for polycystic ovary syndrome: a multistep global consensus process — https://doi.org/10.1016/S0140-6736(26)00717-8
- [01:24] The uterus is an end organ: a preliminary study of the association between abnormal uterine bleeding and hyperinsulinemia — https://doi.org/10.1097/GME.0000000000002548
- [12:22] Human atherosclerotic plaque cells and leiomyoma cells. Comparison of in vitro growth characteristics. — https://pubmed.ncbi.nlm.nih.gov/163592/
- [56:50] Risks and Benefits of Estrogen Plus Progestin in Healthy Postmenopausal Women: Principal Results From the Women's Health Initiative Randomized Controlled Trial — https://doi.org/10.1001/jama.288.3.321
no comments (yet)