Perimenopause can bring changes to periods that are difficult to make sense of. Bleeding may become heavier, pelvic pain may feel different, or symptoms that had settled may return. It is tempting to put everything down to “the change”, but you deserve to understand what is happening.
If you have fibroids or endometriosis, changing hormones may contribute to your symptoms. A naturopathic approach also looks at how the liver, gut, bowel habits, thyroid and wider metabolic health may be influencing how you feel.
Why can symptoms change now?
During perimenopause, oestrogen can rise and fall unpredictably. Ovulation may become less regular, which means some cycles produce less progesterone. These shifts can affect bleeding and may change how existing pelvic conditions feel.
Fibroids often become less troublesome after menopause, but this is not guaranteed. Endometriosis symptoms can continue too. New or worsening symptoms still deserve attention.
Where does oestrogen dominance fit in?
In naturopathic practice, oestrogen dominance may describe a pattern in which oestrogen has a stronger influence relative to progesterone. It does not always mean that oestrogen is unusually high on a blood test. During perimenopause, a woman may have fluctuating oestrogen alongside less progesterone because she is not ovulating regularly.
This is one possibility to explore when bleeding or other symptoms change. It cannot be diagnosed from symptoms alone. Fibroids respond to both oestrogen and progesterone. Endometriosis involves oestrogen activity, inflammation and changes in how tissue responds to progesterone. Neither condition has one simple hormonal cause.
The liver, gut and oestrogen recycling
The liver transforms oestrogen into metabolites and prepares them for removal. It uses several pathways, including methylation, glucuronidation and sulfation. Some metabolites leave through urine; others pass into bile and then the bowel.
This is where the gut comes into the picture. Some gut bacteria produce an enzyme called beta glucuronidase. It can release certain oestrogen compounds that had been prepared for removal, allowing some to be absorbed again. They can return through the circulation to the liver and wider body.
The estrobolome is the name given to the gut microbes involved in oestrogen metabolism. It gives us a reason to consider bowel regularity, gut health and liver function when looking at the whole hormonal picture. It does not mean that a stool result or a particular oestrogen metabolite proves why someone developed fibroids or endometriosis.
If you are constipated, it makes sense to address that rather than focus only on supplements intended to support liver pathways. Comfortable, regular bowel movements, enough tolerated fibre, water, adequate food and movement are useful foundations. Persistent constipation deserves an individual assessment.
Fibroids: when bleeding or pressure changes
Fibroids are growths in the muscle of the womb. They are usually benign, but their position and size can make a real difference to how you feel. Some women have no symptoms. Others notice heavy or prolonged bleeding, clots, pelvic pressure, frequent urination, constipation or discomfort.
Heavy bleeding can leave you low in iron and exhausted. If bleeding has changed, it is worth discussing whether you need a blood count, iron assessment or a scan. Knowing where a fibroid sits can be as helpful as knowing its size.
A whole person review may consider ovulation, blood sugar, thyroid health, inflammation, bowel habits and how oestrogen is processed and eliminated. These are possible contributors to explore, not a reason to assume that one pathway caused the fibroid.
Endometriosis: pain is not just a difficult period
Endometriosis involves tissue similar to the lining of the womb growing elsewhere in the body. Symptoms may include pelvic pain, painful periods, pain with sex, bowel or bladder symptoms and fatigue. Pain can occur outside a period too.
The connection between gut microbes, oestrogen recycling and inflammation is an area of growing interest. It may help us understand part of the wider picture, but it has not established that gut imbalance is the cause of an individual woman’s endometriosis. If you have lived with endometriosis for years, a change in your usual pattern matters.
What about iodine and fibrocystic tissue?
Iodine is sometimes discussed in relation to thyroid health and fibrocystic breast changes. Fibrocystic breast tissue can feel lumpy or tender, sometimes changing across the menstrual cycle. It is not the same condition as a fibroid in the womb.
Iodine is needed for normal thyroid function, and its possible role in breast tissue has been studied. Breast tenderness or lumpiness does not, on its own, tell us that iodine is low. If these symptoms are present, I would consider your thyroid history, diet and any relevant testing as part of the wider assessment.
Please do not start high dose iodine on the assumption that it will resolve fibrocystic changes, fibroids or endometriosis. Iodine supplementation needs individual care, particularly if you have a thyroid condition.
Could it be something else?
Fibroids and endometriosis are not the only possible explanations for pelvic pain or unusual bleeding. Adenomyosis, polyps, changes to the womb lining, bladder or bowel conditions and other concerns may need to be considered.
A naturopathic assessment can explore hormones, nutrition, digestion, sleep and stress alongside appropriate investigation of the bleeding or pain itself.
When should you seek assessment?
Arrange an assessment if you have very heavy bleeding, bleeding between periods or after sex, worsening pelvic pain, new pressure symptoms, or bleeding that leaves you faint or unusually tired.
Any vaginal bleeding after twelve months without a period should be assessed promptly. Do not put it down to a hormone fluctuation or try to manage it with supplements first.
A whole person way forward
I would begin by listening to your story. When did the symptoms change? Are your cycles becoming irregular? How much are you bleeding, and how is it affecting your energy and daily life?
From there, we can consider your cycle pattern, iron status, thyroid and metabolic health, food and fibre intake, bowel regularity, sleep, stress and any medicines or hormone treatments. We can look at existing results and identify which further investigations would answer a useful question.
Supporting nutrition, digestion and elimination may improve overall wellbeing. No food, herb, iodine supplement or “detox” should be promised as a way to dissolve fibroids or cure endometriosis. Herbs and supplements must be chosen with care, especially if you take medication, have heavy bleeding or are considering surgery.
Where a deeper assessment would be useful, we may consider selected testing such as a DUTCH hormone test or a comprehensive stool analysis. These can help us explore patterns in hormone metabolites or gut function and guide individual support. They do not diagnose fibroids or endometriosis, and they do not replace an appropriate scan, examination or assessment of unusual bleeding and pain.
The aim is to understand your condition and your hormonal stage, relieve what can be relieved, and make sure nothing important is missed.