Fibroids — benign uterine tumours — are among the most common conditions affecting women in their reproductive years. Studies in Indian populations suggest that fibroids affect a significant proportion of women between 35 and 50, with many not knowing they have them until symptoms develop or a scan is done for another reason. During perimenopause, the relationship between fibroids and hormones becomes particularly important: the erratic hormonal changes of perimenopause can make fibroids more symptomatic before the sustained oestrogen decline of menopause eventually causes them to shrink. Understanding this trajectory helps women and their doctors make better decisions about when to treat and when to wait.

What fibroids are and why they are so common

Fibroids (medically called leiomyomas or myomas) are non-cancerous growths of the uterine smooth muscle. They are the most common pelvic tumour in women. They are not cancer and have no significant risk of becoming cancer — this is a common fear that deserves direct reassurance.

They vary enormously in size (from a few millimetres to the size of a melon), number (one to several dozen), and location within the uterus. Their location is clinically significant because it determines what symptoms, if any, they cause:

  • Submucosal fibroids — growing into the uterine cavity — are most likely to cause heavy bleeding and fertility issues
  • Intramural fibroids — within the uterine wall — are the most common type; cause symptoms when large
  • Subserosal fibroids — growing on the outer surface of the uterus — more likely to cause pelvic pressure and bulk symptoms than bleeding

Why oestrogen matters for fibroids

Fibroids are driven by oestrogen. They express a high density of oestrogen receptors and grow in response to oestrogen stimulation. They also respond to progesterone — progesterone stabilises fibroid growth rather than stimulating it. This hormonal dependency is the key to understanding what happens to fibroids across the perimenopausal transition.

📈 Fibroid Behaviour Across the Perimenopausal Transition
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Early perimenopause — oestrogen surges. In early perimenopause, oestrogen does not simply decline. It fluctuates — sometimes reaching higher-than-normal levels. These surges stimulate fibroid growth. Women with previously small, manageable fibroids often find symptoms worsening significantly in their early 40s.
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Mid perimenopause — progesterone falls, lining unstabilised. As anovulatory cycles become more frequent, progesterone production falls. Without progesterone, oestrogen builds a thick, unstabilised uterine lining. Fibroids compound this effect — submucosal fibroids in particular can cause severe, heavy, irregular bleeding at this stage.
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Late perimenopause — oestrogen begins sustained decline. As ovarian reserve is depleted, oestrogen starts falling more consistently. Fibroid growth slows and may plateau. Symptoms begin improving for some women.
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Post-menopause — oestrogen at sustained low level. Without oestrogen stimulation, fibroids lose their growth signal. They typically shrink by 30–60% within 2–3 years of menopause. Many women who chose to wait through perimenopause find fibroids become clinically irrelevant after menopause.

Symptoms that can worsen during perimenopause

For women who already have fibroids entering perimenopause, or who develop them during the transition (fibroids are most common in the 40s), the perimenopausal hormonal environment can intensify symptoms considerably:

Heavy menstrual bleeding: This is the most significant symptom. Submucosal fibroids distort the uterine cavity and increase the surface area of the lining, leading to heavier and prolonged periods. Combined with anovulatory cycles that produce a thick, unstabilised lining, the result can be very heavy bleeding — sometimes with clots, sometimes lasting more than a week.

Pelvic pressure and fullness: Larger fibroids — particularly intramural and subserosal — create pressure on adjacent structures. Women describe a constant feeling of pelvic fullness or heaviness, sometimes with a sense that something is pressing outward.

Urinary symptoms: Fibroids pressing on the bladder cause increased frequency of urination, urgency, or difficulty fully emptying the bladder. This is sometimes mistaken for a urinary tract infection.

Lower back and leg pain: Large fibroids can press on spinal nerves or the pelvic vasculature, causing referred pain down the back and legs.

Bloating and visible abdominal distension: Multiple large fibroids or a single very large fibroid can cause visible enlargement of the lower abdomen — women sometimes describe looking pregnant.

The anaemia connection — frequently missed in India

🩸 The Heavy Bleeding — Anaemia Cycle
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Fibroids cause heavy monthly blood loss. Sustained heavy periods over months and years lead to chronic blood loss that outpaces the body's ability to replace iron stores.
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Iron stores fall, then haemoglobin falls. First ferritin (stored iron) is depleted, then haemoglobin. By the time blood tests show low haemoglobin, iron deficiency has often been present for months or years.
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Symptoms of anaemia are attributed to perimenopause. Exhaustion, brain fog, shortness of breath on exertion, palpitations, and cold hands are classic anaemia symptoms — but are frequently assumed to be "just perimenopause" or stress.
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Anaemia goes untreated, heavy bleeding continues. Without identifying and treating the fibroid-driven blood loss, the cycle continues — worsening both the anaemia and the perimenopause experience overall.

If you have fibroids and heavy periods, always ask your doctor to check haemoglobin AND ferritin — not just haemoglobin. Low ferritin can cause significant symptoms even when haemoglobin is still in the normal range.

In India, chronic anaemia in women is extremely common and frequently under-recognised in the context of fibroids and heavy perimenopausal bleeding. Many women function for years in a state of significant iron deficiency, normalising their exhaustion and attributing it to other causes. If you have heavy periods — whether or not fibroids have been confirmed — a full blood count and ferritin level is a basic and important test.

When treatment is needed and when waiting is appropriate

Not all fibroids require treatment. The decision depends on symptoms, their impact on quality of life, and how close a woman is to menopause.

A watchful waiting approach is often appropriate when:

  • Symptoms are mild and manageable
  • The woman is in late perimenopause and menopause is likely within 1–3 years
  • The fibroids are not causing anaemia or significant functional impairment
  • Regular monitoring (ultrasound every 6–12 months) confirms fibroids are not growing rapidly

Treatment is worth serious consideration when:

  • Periods are heavy enough to cause iron deficiency anaemia
  • Pelvic pain or pressure is constant and affecting daily activities
  • Urinary symptoms are significantly impacting quality of life
  • The uterus has become very enlarged
  • The woman is far from menopause and symptoms are significantly affecting her life

Treatment options range from medical management (to control bleeding and symptoms) to minimally invasive procedures and surgery. The right option depends on fibroid size, location, number, and whether fertility preservation is relevant. A gynaecologist experienced in fibroid management is best placed to discuss the options specific to your situation.

The Indian context

Fibroids are extremely common in Indian women, yet many go undiagnosed for years because heavy periods are so routinely normalised. Women are frequently told by family members — and sometimes by doctors — that heavy periods are simply hereditary or part of being a woman. This delay in diagnosis means many Indian women arrive at treatment with significantly enlarged fibroids, severe anaemia, and symptoms that have already substantially affected their quality of life for years.

If your periods have become heavier in your 40s, or if you have always had heavy periods and never had an ultrasound — asking for a pelvic ultrasound is entirely appropriate. It takes a few minutes and provides definitive information about whether fibroids are present and their size.

FAQ

Do fibroids get worse during perimenopause?

They can — particularly in early perimenopause when oestrogen surges stimulate growth. Women who had small, manageable fibroids before perimenopause sometimes find symptoms significantly worse in their early 40s as hormonal fluctuations intensify.

Will fibroids shrink after menopause?

Yes — in almost all cases. Fibroids are oestrogen-dependent. Once oestrogen falls to consistently low post-menopausal levels, fibroids lose their main growth signal and shrink, typically by 30–60% within 2–3 years. Most women find fibroid-related symptoms resolve or significantly improve after menopause.

Can fibroids cause spotting during perimenopause?

Yes. Submucosal fibroids that distort the uterine cavity are a common cause of irregular bleeding and spotting in perimenopause, in addition to the spotting caused by anovulatory cycles. A pelvic ultrasound will distinguish between the two.

Is heavy bleeding during perimenopause always caused by fibroids?

No — heavy bleeding in perimenopause is also caused by anovulatory cycles, endometrial polyps, adenomyosis, and hormonal imbalance without any structural abnormality. A pelvic ultrasound and gynaecological assessment will identify the cause.

Should I have fibroid surgery before menopause?

This depends on your symptoms, the size and location of fibroids, how close you are to menopause, and your quality of life. If menopause is approaching and symptoms are manageable, many gynaecologists recommend waiting. If symptoms are significantly affecting your life — particularly if anaemia is present — earlier intervention is often the better choice. Discuss the specific options with a gynaecologist.