Endometrial polyps are overgrowths of the uterine lining, usually a few millimeters to about 3 centimeters across, built from the same glandular tissue that thickens and sheds each month. They are common. Imaging studies put them in roughly 1 in 8 to 1 in 4 women who are checked for abnormal bleeding, and many more turn up by accident during a fertility workup or a scan done for something else. Most are benign. A minority contain precancerous or cancerous cells, and those odds climb after menopause.
What makes polyps tricky is how much they resemble other problems. Fibroids, endometrial hyperplasia, and the erratic cycles of perimenopause can all produce the same spotting and heavy days. What follows covers what drives polyp growth, how they are told apart from their lookalikes, which natural measures are worth your time, and where the evidence runs out. Plenty of women are in the same boat.
Causes
Polyps grow where estrogen runs high relative to progesterone. The uterine lining is built to thicken under estrogen and then shed on progesterone's cue. When that second signal is weak or missing, patches of glandular tissue can keep proliferating until they push out a stalk with its own blood supply. Ovulation problems, PCOS, and the years just before menopause, when cycles often stop releasing an egg, all raise the odds.
Local chemistry matters as much as circulating hormones. Polyp tissue overexpresses estrogen receptors and aromatase, the enzyme that makes estrogen. In plain terms, a polyp can help manufacture its own growth signal, which is part of why they persist even after a normal cycle returns. ACOG's practice bulletin on abnormal uterine bleeding (No. 128, 2012) lists polyps among the most common structural causes of bleeding in reproductive-aged women, alongside fibroids and adenomyosis. The same estrogen environment that produces vaginal atrophy after menopause also changes how the lining behaves.
Who tends to grow them
Age is the strongest single factor, with most polyps found between 40 and 60 and prevalence climbing each decade. Body fat matters because fat tissue makes estrogen, and rates are consistently higher in women with a BMI above 30. High blood pressure appears as a risk factor in more than one study, though it may be a marker of metabolic strain rather than a cause. Tamoxifen is the clearest drug trigger: ACOG's 2014 committee opinion on tamoxifen and uterine cancer notes that the drug raises the risk of both polyps and endometrial cancer, which is why bleeding on tamoxifen gets investigated rather than watched.
The cancer question
Across surgical series, roughly 1 to 3 percent of removed polyps contain a focus of endometrial cancer. After menopause that figure rises to about 4 to 5 percent, which is why postmenopausal bleeding earns a workup instead of a shrug. Size helps but does not settle it: polyps under about 1.5 centimeters are less likely to be malignant, not exempt. Nothing about the bleeding pattern tells you which polyp is which.
Symptoms
Roughly a third to half of polyps cause no symptoms at all and get found on a scan done for another reason. When they do speak up, they tend to do it through bleeding. The mechanism is part mechanical, part hormonal: a polyp is a fragile, blood-vessel-rich outgrowth sitting on a surface that is trying to shed, so it bleeds easily and often out of rhythm with the cycle.
- Spotting between periods is the most common complaint, often light and brownish and easy to write off as ovulation bleeding.
- Heavier or longer periods, sometimes with clots. Cochrane reviewers in 2019 found that NSAIDs such as mefenamic acid reduce heavy bleeding compared with placebo, but when a polyp is the source, the pattern usually settles only after removal.
- Any bleeding after menopause, even one episode. Roughly 1 in 10 to 1 in 5 cases of postmenopausal bleeding traces to a polyp, and this symptom always earns a workup.
- Watery or blood-tinged discharge, often with a dull ache low in the pelvis. A polyp can also harbor low-grade inflammation, which produces discharge that persists rather than cycling with your period.
- Difficulty conceiving. Polyps near the fallopian tube openings can interfere with implantation, and trial evidence suggests removal improves conception rates in women going through IVF.
Lookalikes matter. Submucosal fibroids, endometrial hyperplasia, and the anovulatory cycles of perimenopause can all mimic this bleeding pattern, and only imaging or hysteroscopy separates them. Some women describe a pelvic fullness that gets blamed on bloating after meals when the source sits lower, near the uterus. Get seen the same day if bleeding soaks a pad every hour, if you feel dizzy or short of breath, or if bleeding comes with fever and foul discharge.
Natural Remedies
Nothing here will make a polyp vanish on a scan, and anyone who tells you otherwise is selling something. What natural measures can do is lower the estrogen load feeding the tissue, steady the bleeding, and improve how you feel before and after a polypectomy. Follow-up studies of untreated polyps report regression in roughly 6 to 27 percent of cases, mostly small ones under 1 centimeter. For larger polyps, spontaneous disappearance is uncommon.
Weight, blood sugar, and the estrogen reservoir
Fat tissue converts androgens into estrone, so body weight is a direct lever on the hormonal environment polyps prefer. Losing 5 to 10 percent of body weight lowers circulating estrogen measurably in postmenopausal women, and the shift shows up within 3 to 6 months. Aim for 150 minutes of moderate activity a week (five 30-minute walks covers it) and ask for a fasting glucose and HbA1c rather than guessing. Insulin resistance keeps estrogen higher by lowering sex hormone binding globulin, so it is worth knowing your numbers.
Fiber, lignans, and the gut loop
Estrogen leaves the body through bile and the stool, and gut bacteria can undo that exit by cleaving the molecule back into circulation. Fiber speeds transit and binds some of it. Target 25 to 30 grams a day, and consider 1 to 2 tablespoons (10 to 15 grams) of ground flaxseed stirred into yogurt or oatmeal; pilot data in fibroids suggests flaxseed lignans may influence estrogen-sensitive growth, though nothing similar has been tested in polyps. Alcohol is the other easy lever. Two drinks a day is associated with higher estrogen levels, and cutting to under three drinks a week is a reasonable target while you sort this out.
Protecting your iron
If you are soaking pads, get a ferritin checked and aim to keep it above 30 ng/mL with iron-rich food (liver, red meat, lentils paired with a vitamin C source) before reaching for supplements that may constipate you. Vitamin D deserves a mention because of adjacent evidence: a 2013 study in the journal Epidemiology linked low vitamin D levels to a higher risk of uterine fibroids, and many clinicians target a 25(OH)D between 30 and 50 ng/mL. Whether that helps polyps specifically is unproven, so treat it as general hormonal housekeeping rather than polyp therapy.
Herbal Treatments
No herb has been tested against polyp size in a controlled trial. That is not a reason to skip the category, it is a reason to aim it correctly: the plants below act on the hormonal background and the symptoms around the polyp, not on the polyp itself. The NIH's National Center for Complementary and Integrative Health (NCCIH) is blunt that evidence for most of these uses is limited and that studies are small or short. Treat any improvement as a bonus, not a plan.
Chasteberry (Vitex agnus-castus)
Vitex acts on dopamine receptors in the pituitary and can nudge prolactin down, which in turn supports a stronger luteal phase and less estrogen-dominant cycling. Typical doses are 20 to 40 mg of dried fruit extract or 40 drops of tincture once daily in the morning. Give it three full cycles before judging anything; single-month trials tell you nothing. NCCIH notes the evidence is mixed for cycle-related complaints, so keep expectations modest. Avoid it in pregnancy, and check with a pharmacist if you take antipsychotics, dopamine agonists, or hormonal contraception, since Vitex can interact with all three.
Turmeric (curcumin)
Curcumin lowers inflammatory signaling, including the prostaglandins that make a bleeding uterus cramp. A practical dose is 500 mg of curcumin twice daily, ideally a phytosome or piperine-enhanced form, since plain turmeric powder absorbs poorly. Stop 1 to 2 weeks before any surgery, including a planned hysteroscopy, because curcumin mildly thins the blood. If you take tamoxifen or warfarin, ask your prescriber first. Curcumin can shift how those drugs are metabolized, and that interaction matters more than any theoretical benefit for a polyp.
Green tea (Camellia sinensis)
Green tea's EGCG is the best-studied polyphenol here, mostly in uterine fibroids, where small trials used roughly 300 to 800 mg of EGCG daily for several months and reported modest volume reductions. Whether the same holds for polyps is unknown. It does inhibit aromatase in lab work, which is the mechanism that makes it interesting. Take capsules with food, keep total intake at or below 800 mg EGCG a day, and separate it from iron-rich meals by 2 hours: tea polyphenols can cut non-heme iron absorption significantly, which is the last thing you need with heavy periods. Anyone with liver disease should skip high-dose extracts.
Ginger (Zingiber officinale)
Ginger is the most useful of the four for the cramping that comes with a bleeding polyp, and it has decent trial support in period pain. A common regimen is 750 to 2000 mg of dried ginger powder a day, split into 2 to 4 doses and started 1 to 2 days before bleeding is expected; most women notice a difference within the first cycle. It works partly by blocking prostaglandin production, the same pathway NSAIDs use, so do not stack high doses of both. Avoid therapeutic doses alongside warfarin, and keep to culinary amounts in pregnancy.
Prevention
Prevention here is a ranking problem, and the honest ranking puts ovulation and metabolic health first, weight and alcohol second, and supplements a distant third. Polyps are not something you catch. They grow out of a hormonal pattern that builds over years, which means the levers are slow but real.
Keep ovulation happening
Regular ovulation supplies the progesterone that opposes estrogen's growth signal. If you have PCOS, insulin resistance, or cycles creeping past 35 days, that is the pattern worth fixing, whether through weight change, a drug your clinician prescribes, or a cyclic progestin. Women using estrogen therapy after menopause need a progestogen alongside it. Unopposed estrogen is the classic recipe for endometrial overgrowth, polyps and hyperplasia alike.
Watch the tamoxifen years
If you take tamoxifen, report any spotting immediately rather than at your next annual visit. ACOG's 2014 opinion on the drug recommends prompt evaluation of bleeding, and it does not recommend routine ultrasound screening in women without symptoms, because it generates false alarms. Perimenopausal hormone swings that show up as night sweats that disrupt sleep also tend to bring irregular bleeding, so the two symptoms usually share one cause. Tracking your cycles for 3 months gives your clinician something concrete to work with.
What not to bother with
No supplement has trial evidence for preventing polyps. Cutting soy is a common instinct and probably unnecessary; whole-food soy at typical intakes has not been shown to raise polyp or endometrial cancer risk, and some data suggests neutral or favorable effects. Smoking mildly raises the odds of estrogen-driven growth and is worth quitting for a long list of other reasons. What moves the needle: 150 minutes of activity a week, a waist measurement you track monthly, alcohol under three drinks a week, and a progestogen if you use estrogen.
