Heavy Periods Without Surgery or Medication: Understanding the Causes and What You Can Do
- Jul 27
- 9 min read
If you have heavy periods and you have been offered the Mirena IUD, an ablation, or long-term hormonal medication, and none of those options feel right to you, I want you to know that you're not out of options.
The options you have been offered are legitimate treatments that work well for many women. But they are not the only path, and for a significant number of women, they are not the right first step. One of my concerns is that they address the bleeding without addressing what is driving it. And when the driver is left in place, the underlying process continues, even if symptoms are managed. I think women deserve better than this.
Heavy bleeding is not just how some women are. It is almost always driven by something identifiable. And identifiable things can be addressed.
How Common Is Heavy Menstrual Bleeding?
More common than most clinical statistics suggest. The numbers vary depending on how the condition is defined and how it is reported, but the picture is consistent.
A 2023 review published in the American Journal of Obstetrics and Gynecology and the International Journal of Gynecology and Obstetrics found that while healthcare system data suggests heavy menstrual bleeding affects 3 to 5 percent of women, population-based studies using quality-of-life definitions suggest it may affect up to 50 percent of women of reproductive age. The same review confirmed that women with heavy menstrual bleeding lose on average five to six times more iron per menstrual cycle than women with normal blood loss, resulting in total depletion of iron reserves (Munro et al., IJGO, 2023; AJOG, 2023).
Despite this prevalence, approximately half of affected women do not seek medical attention, normalising something that significantly impacts their daily life, work, and wellbeing. Many of those who do seek help are offered symptom management rather than investigation. The question of why the bleeding is heavy is rarely the centrepiece of the consultation. But it should be.
The Most Common Drivers of Heavy Periods
Oestrogen Dominance
Oestrogen is the hormone responsible for building the uterine lining across the first half of the cycle. When oestrogen is high relative to progesterone, whether because oestrogen production is elevated, because oestrogen is not being cleared efficiently, or because progesterone is not rising adequately to balance it, the uterine lining builds thicker than it should. When it sheds at menstruation, it bleeds more heavily.
Oestrogen dominance is not always about too much oestrogen being produced. In many women, the driver is impaired oestrogen clearance through the liver and gut. When glucuronidation, the liver's primary oestrogen detoxification pathway, is not working efficiently, or when the gut microbiome is reactivating oestrogen that has already been packaged for elimination, oestrogen recirculates rather than being excreted. The result is elevated circulating oestrogen and a thicker uterine lining.
This is one of the reasons addressing gut health and liver detoxification pathways is clinically relevant to heavy periods, even when the primary complaint has nothing to do with digestion.
Low Progesterone
Progesterone is produced after ovulation by the corpus luteum. Its role in the uterine lining is to mature and stabilise it, reducing its thickness and regulating how it sheds. When progesterone is insufficient, either because ovulation has not occurred or because the luteal phase is compromised, this regulatory effect is absent.
A 2022 review published in Cells confirmed that the imbalance of oestrogen and progesterone disrupts their complex regulatory mechanisms in the endometrium, leading to oestrogen dominance and progesterone resistance, which are associated with heavy bleeding, painful menstruation, and conditions including endometriosis and adenomyosis (MacLean and Hayashi, Cells, 2022).
Low progesterone can also result from anovulatory cycles, cycles where ovulation has not occurred at all. These cycles can appear relatively regular and go completely undetected without progesterone testing or basal body temperature tracking. Women experiencing heavy bleeding with anovulatory cycles are often told their hormones are normal because their cycle length appears normal, when the more relevant question is whether ovulation and adequate progesterone production are actually occurring.
Thyroid Dysfunction
The thyroid is one of the most consistently missed contributors to heavy menstrual bleeding, and one of the most important to rule out early in any investigation.
Thyroid hormones regulate uterine blood flow, influence clotting factor production, and play a direct role in supporting progesterone production by the corpus luteum. When thyroid function is impaired, all three of these processes are affected. The result can be heavier, more prolonged bleeding that does not resolve until thyroid function is adequately supported.
Subclinical hypothyroidism, where thyroid function is impaired but TSH sits within the standard reference range, is particularly likely to be missed. A full thyroid panel including free T3, free T4, and thyroid antibodies provides a more complete investigation than TSH alone and is worth requesting when heavy bleeding has not been adequately explained by other investigations.
Iron Deficiency and the Self-Perpetuating Cycle
The relationship between heavy periods and iron deficiency runs in both directions, and understanding this is clinically essential.
Heavy periods deplete iron significantly. Women with heavy menstrual bleeding lose on average five to six times more iron per cycle than women with normal blood loss. Over time this depletes iron stores, often to a degree that is not reflected in haemoglobin levels until the deficiency is advanced.
But iron deficiency also makes periods heavier. Iron plays a role in vascular constriction, helping blood vessels tighten and slow bleeding. When iron stores are low, this constriction is impaired. Vessels in the uterine lining dilate more and bleed more freely. Low iron makes periods heavier, and heavier periods deplete iron further.
A 2025 review of ferritin and abnormal uterine bleeding published in ScienceDirect confirmed that this self-perpetuating cycle is well established in the literature, with women experiencing heavy menstrual bleeding losing five to six times more iron per cycle than those without the condition, and that iron deficiency adversely impacts physical health, emotional wellbeing, and work productivity independently of anaemia (ScienceDirect, 2025).
This means that treating iron deficiency without addressing the heavy bleeding, or addressing the bleeding without correcting the iron deficiency, produces incomplete results. Both need to be addressed simultaneously, and the iron deficiency needs to be assessed properly, ferritin rather than haemoglobin alone, to identify depletion before it reaches anaemia.
Structural Causes
Uterine fibroids and adenomyosis are structural causes of heavy bleeding that deserve investigation when periods are significantly heavy or painful. Both are hormonally driven, with oestrogen playing a central role in their development and progression. This means that addressing the hormonal factors, oestrogen dominance, progesterone balance, and the factors that influence both, is clinically relevant alongside any medical or surgical management of these conditions.
Fibroids in particular are among the most common benign structural findings in women of reproductive age and are one of the leading indications for hysterectomy globally. Understanding the hormonal drivers of fibroid growth gives women and their practitioners more levers to work with before reaching for the most invasive intervention.
"What I see consistently in practice is that the investigation into heavy bleeding stops too early. A blood count shows anaemia. An ultrasound rules out obvious structural pathology. Hormones come back in range. And then the conversation moves directly to management, the Mirena, ablation, or hormonal medication, without anyone asking what is driving the bleeding, whether ovulation is actually occurring, whether the thyroid is contributing, or whether the iron and bleeding cycle has been properly recognised and addressed. When we go back to those questions, there is almost always something to work with."
- Gemma Knaap, Naturopath (BHSc Naturopathy, Certified Natural Fertility Educator, Gut Microbiome Analyst) | Southernwood Apothecary & Clinic
If You Do Not Want Medication or Surgery
The most important thing I want you to hear is this: not wanting the Mirena, an ablation, or long-term hormonal medication is a completely valid position.
The naturopathic approach to heavy periods starts with understanding what is driving the bleeding in your specific case. That requires investigation, not assumption. Progesterone testing in the mid-luteal phase to confirm ovulation and assess progesterone adequacy. A full thyroid panel. Ferritin, not just haemoglobin. An assessment of oestrogen clearance through the liver and gut. A detailed cycle and symptom history.
From there, treatment is targeted. Supporting oestrogen metabolism and clearance through nutritional, dietary, and gut health interventions. Supporting ovulation quality and progesterone production where this is the driver. Addressing thyroid function, nutritionally and clinically, where this is contributing. Breaking the iron and heavy bleeding cycle with appropriate iron support and strategies to reduce blood loss. And where structural causes are present, supporting the hormonal environment that is driving them alongside any medical management.
This approach does not produce results overnight. Hormonal change takes time, typically several cycles before meaningful changes are observed. But the changes that do occur tend to be sustainable and long lasting, because they address the cause rather than overriding it.
You Deserve Better Than Managing Around Your Period
If you have been flooding through protection every month, cancelling plans, planning your life around your period, and doing all of this without anyone properly investigating why, that deserves to change.
Heavy menstrual bleeding is not a minor inconvenience. It depletes iron, affects cognitive and physical function, undermines quality of life, and for many women has been normalised so thoroughly that they no longer expect it to be any different. It can be different. For most women there is a cause, and most causes are treatable.
In person consultations are available at my Albany clinic. Telehealth consultations are available from anywhere in Australia. Both can be booked online here.
Frequently Asked Questions
Can heavy periods be treated without surgery or medication?
Yes, for many women. The effectiveness of a non-pharmaceutical approach depends on what is driving the heavy bleeding. Where the cause is hormonal, such as oestrogen dominance, low progesterone, or thyroid dysfunction, addressing those drivers through naturopathic, nutritional, and lifestyle interventions can meaningfully reduce blood loss over several cycles. Where structural causes like fibroids or adenomyosis are present, addressing the hormonal environment that drives them is relevant alongside any medical management. A thorough assessment is the essential starting point.
What causes heavy periods?
The most common causes are oestrogen dominance, where oestrogen is high relative to progesterone and the uterine lining builds thicker than it should. Low progesterone, which means the lining is not properly regulated before it sheds. Thyroid dysfunction, which affects uterine blood flow, clotting factors, and progesterone production. Iron deficiency, which impairs vascular constriction and makes bleeding heavier. And structural causes including fibroids and adenomyosis, both of which are hormonally driven. Most women have more than one contributing factor.
How is iron deficiency connected to heavy periods?
The relationship runs in both directions. Heavy periods deplete iron significantly. Women with heavy menstrual bleeding lose five to six times more iron per cycle than women with normal blood loss. Low iron in turn impairs vascular constriction in the uterine lining, meaning vessels bleed more freely and for longer. Low iron makes periods heavier, and heavier periods worsen iron deficiency. Breaking this cycle requires addressing both the iron deficiency and the bleeding simultaneously. Ferritin, not haemoglobin alone, is the appropriate marker for identifying iron depletion before it reaches anaemia.
Can thyroid problems cause heavy periods?
Yes. Thyroid hormones regulate uterine blood flow, influence clotting factor production, and support progesterone production by the corpus luteum. When thyroid function is impaired, all three of these processes are affected. Subclinical hypothyroidism, where thyroid function is impaired but TSH sits within the standard reference range, is particularly likely to be missed in standard investigations. A full thyroid panel including free T3, free T4, and thyroid antibodies provides a more complete picture.
What is oestrogen dominance and how does it affect bleeding?
Oestrogen dominance refers to a state where oestrogen is high relative to progesterone, whether because oestrogen production is elevated, clearance is impaired, or progesterone is insufficient. Oestrogen drives the growth of the uterine lining across the first half of the cycle. When oestrogen dominance is present, the lining builds thicker than it should, and when it sheds at menstruation, it bleeds more heavily. Oestrogen clearance depends on adequate liver glucuronidation and a healthy gut microbiome. Impaired clearance through either pathway can contribute to oestrogen dominance even when oestrogen production itself is not excessive.
Do I have to choose between ablation, the Mirena, or hormonal medication?
No. These are legitimate treatment options that work well for many women, and for some they are the most appropriate choice. But they are not the only options, and they are most effective when chosen alongside an understanding of what is driving the bleeding. A naturopathic assessment investigates the hormonal, nutritional, and structural factors contributing to heavy bleeding and addresses them directly. For women who do not want pharmaceutical or procedural intervention, this is a valid and often effective alternative pathway. For women who do use these treatments, addressing the underlying causes alongside them tends to improve outcomes.
Can a naturopath help with heavy periods?
Yes. A naturopath investigates the underlying hormonal, nutritional, thyroid, and gut health factors contributing to heavy menstrual bleeding and addresses them with targeted, personalised support. This includes assessment of oestrogen clearance, ovulation and progesterone adequacy, thyroid function, iron status, and structural considerations. Treatment is designed around the individual picture rather than applied generically. In person consultations are available in Albany WA and Telehealth consultations are available across Australia.
About the Author
Gemma Knaap is a naturopath specialising in women's hormonal health, gut health, fertility, and reproductive wellbeing. She holds a Bachelor of Health Science in Naturopathy and is a Certified Natural Fertility Educator and Gut Microbiome Analyst. In person consultations are available at her Albany, WA clinic. Telehealth consultations are available across Australia.
References
Munro, M.G. et al. (2023). Heavy menstrual bleeding, iron deficiency, and iron deficiency anemia: Framing the issue. International Journal of Gynecology and Obstetrics, 162(S2), 4-13. https://doi.org/10.1002/ijgo.14943
Munro, M.G. et al. (2023). The relationship between heavy menstrual bleeding, iron deficiency, and iron deficiency anemia. American Journal of Obstetrics and Gynecology, 228(5S), S1-S17. https://doi.org/10.1016/j.ajog.2022.11.1283
ScienceDirect. (2025). Ferritin before hemoglobin: Impact of abnormal uterine bleeding on quality of life. https://www.sciencedirect.com/science/article/pii/S2949838424000410
MacLean, J.A. and Hayashi, K. (2022). Progesterone Actions and Resistance in Gynecological Disorders. Cells, 11(4), 647. https://doi.org/10.3390/cells11040647
PMC. (2025). Thyroid and reproductive hormonal factors associated with menorrhagia among women in Kenya. https://pmc.ncbi.nlm.nih.gov/articles/PMC12067019/
Bofill Rodriguez, M. et al. (2022). Interventions for heavy menstrual bleeding: overview of Cochrane reviews and network meta-analysis. Cochrane Database of Systematic Reviews, 5(5), CD013180. https://doi.org/10.1002/14651858.CD013180.pub2
Cleveland Clinic. (2024). Menorrhagia (Heavy Menstrual Bleeding): Causes and Treatment. https://my.clevelandclinic.org/health/diseases/17734-menorrhagia-heavy-menstrual-bleeding
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