Heavy periods, in plain language.

◇ Quick answer

What counts as "heavy" — actually heavy.

Many women normalise heavy periods because their mother or sister had them, or because nobody ever asked. The medical definition of heavy menstrual bleeding (menorrhagia) is a blood loss of more than 80ml per cycle — but nobody measures that, so the practical signals doctors look for are clearer:

• Soaking through a pad or tampon every hour for several hours in a row
• Needing to use both a pad and a tampon ("double protection")
• Passing clots larger than 2.5cm (about a 50-cent coin)
• Periods that last longer than 7 days
• Getting up overnight to change protection
• Bleeding that interferes with work, sleep, exercise or daily life
• Symptoms of anaemia — exhaustion, breathlessness on stairs, dizziness

If two or more of those describe you, what you're experiencing isn't normal-heavy. It's clinically heavy, and it has causes worth investigating.

Why heavy periods happen.

The most common causes (drawn from Mayo Clinic and NHS guidance):

• Uterine fibroids. The single most common structural cause. Particularly the submucosal type that bulges into the uterine cavity. Read our fibroid guide.
• Endometrial or cervical polyps. Small, usually benign growths of the uterine or cervical lining. Removable.
• Adenomyosis. Endometrial tissue growing into the muscular wall of the uterus. Often goes undiagnosed for years; causes heavy, painful periods.
• Anovulatory cycles. When you don't ovulate, you don't make progesterone — and without progesterone the lining keeps thickening unopposed. Common in adolescence, perimenopause, PCOS and after going off hormonal contraception.
• Thyroid disorders. Both under- and over-active thyroid affect menstrual flow. A simple TSH blood test rules this in or out.
• Bleeding disorders. Von Willebrand disease and other clotting problems often first reveal themselves through heavy periods. If your mother or sister had them too, mention it.
• Copper IUD. Effective non-hormonal contraception, but commonly increases bleeding.
• Medications. Blood thinners (warfarin, aspirin in high doses), some anti-inflammatories.
• Cancer (rare). Endometrial or cervical cancer can present with abnormal bleeding. Always worth ruling out, especially if bleeding is between periods or after menopause.

The iron-anaemia link nobody talks about enough.

This is the part of heavy periods that often goes unaddressed. Chronic heavy bleeding is the leading cause of iron-deficiency anaemia in pre-menopausal women worldwide. And iron-deficiency anaemia is what makes you exhausted, breathless on stairs, brain-fogged, hair-shedding, dizzy, restless-legged at night, and pale.

The blood tests to ask for: full blood count (FBC), ferritin (the iron-storage protein — the most sensitive early marker of iron deficiency), and ideally transferrin saturation. Ferritin under 30 ng/mL is widely considered low even if your haemoglobin still looks normal — that's iron deficiency without (yet) full anaemia.

Dietary iron comes in two forms: haem iron (from animal sources — red meat, dark poultry, fish, eggs) which is highly absorbable, and non-haem iron (from plant sources — lentils, beans, spinach, fortified grains) which absorbs better when paired with vitamin C. Tea, coffee, calcium and high-dose zinc inhibit iron absorption — keep them away from iron-rich meals.

How heavy periods get investigated.

A standard workup for heavy menstrual bleeding usually involves:

• Detailed history. When did it start, how heavy, how long, what's your contraception, any clotting issues in family.
• Pelvic exam. Looking for obvious causes like polyps or an enlarged uterus.
• Blood tests. Full blood count, ferritin, thyroid (TSH), and sometimes coagulation tests.
• Pelvic ultrasound. First-line imaging. Detects fibroids, polyps, adenomyosis and most ovarian abnormalities.
• Hysteroscopy or saline-infusion sonohysterography. If polyps or submucosal fibroids are suspected and ultrasound isn't conclusive.
• Endometrial biopsy. Sometimes recommended for women over 45 or with risk factors for endometrial cancer.

What conventional medicine offers.

We are not anti-medical. The toolkit for heavy periods is broader and less aggressive than most women realise:

• NSAIDs (ibuprofen, mefenamic acid) — taken from the start of bleeding can reduce flow by 20–40%.
• Tranexamic acid. A non-hormonal medication that reduces flow by 30–60%. Taken only on heavy days. Often the first option for women who want to avoid hormonal treatment.
• Combined oral contraceptive pill. Reduces flow and regularises cycles.
• Hormonal IUD (Mirena and similar). One of the most effective treatments — reduces bleeding by 70–90% within months. Non-surgical alternative to ablation or hysterectomy for many women.
• Endometrial ablation. A procedure that destroys the uterine lining. Effective for women who have completed their family.
• Polypectomy or myomectomy. Surgical removal of polyps or fibroids if those are the cause.
• Hysterectomy. Definitive solution when other approaches have failed and fertility is no longer a goal.

Diet, lifestyle, and what actually helps.

Lifestyle won't fix bleeding caused by a fibroid or polyp — but it changes the body those treatments work in, and it materially improves the iron picture:

• Iron-rich eating. Red meat in moderation, dark poultry, fish, lentils, beans, spinach, fortified grains. Pair plant iron with vitamin C (citrus, berries, peppers).
• Move tea and coffee away from iron meals. The polyphenols block absorption. Keep them 1–2 hours apart.
• Polyphenol-rich diet pattern. Berries, leafy greens, cruciferous vegetables, olive oil, green tea (not at meals!), pomegranate. Supports overall hormonal balance.
• Omega-3s. Fatty fish, flax, walnuts. Reduces prostaglandins that drive heavy bleeding and cramps.
• Vitamin D. Frequently deficient; ask your doctor to test.
• Cut ultra-processed foods, trans fats and excess alcohol. All burden the inflammation and hormone-clearing pathways.
• Weight in a healthy range. Excess body fat increases oestrogen production and changes flow patterns.
• Sleep and stress management. Cortisol affects everything sex-hormones do.

Where Beyond Cactus+ fits.

We need to be careful here, because we're a brand writing about a condition our brand is built around. So the rule we hold ourselves to is: say less than the evidence, not more.

Beyond Cactus+ is a daily plant-based ritual built on three antioxidant pillars and a seven-berry mix. It is not a treatment for heavy bleeding. It will not reduce your flow. It will not replace the workup you need if your bleeding is severe enough to cause anaemia. What it offers is a concentrated way to add polyphenol intake to your day, plus a natural source of vitamin C from acerola in the Florac™ blend (which can help iron absorption when you take it with iron-rich meals).

The three pillars:

• Mexico cactus (nopal) — soluble fibre, betalain pigments, traditional women's-wellness use across centuries.
• Florac™ 10-plant antioxidant complex — including the acerola, bilberry and pomegranate that support broad polyphenol coverage.
• Himalayan Tartary Buckwheat — a natural source of 2-HOBA (hobamine), a selective scavenger of isolevuglandins from lipid oxidation.

When to see a doctor — please don't skip this.

Make an appointment with a clinician if you have any of:

• Periods consistently heavier than they used to be, or longer than 7 days
• Soaking through a pad or tampon every hour for several hours
• Passing clots larger than a 50-cent coin (2.5cm)
• Bleeding between periods, after sex, or any bleeding after menopause
• Symptoms of anaemia (exhaustion, breathlessness, dizziness, pale skin)
• Bleeding that's interfering with work, sleep or daily life

Go to the emergency room if you are soaking a pad or tampon every 15–30 minutes, passing very large clots continuously, feeling faint or lightheaded, have a rapid heartbeat, or are bleeding heavily after menopause. That's haemorrhage territory.

Frequently asked questions.

What counts as a 'heavy' period medically?

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Clinically, heavy menstrual bleeding (menorrhagia) means losing more than 80ml of blood per cycle — but few women measure that. The practical signals doctors use are: soaking through a pad or tampon every hour for several hours in a row, needing double protection, passing clots larger than a 50-cent coin (about 2.5cm), bleeding for more than 7 days, or bleeding that interferes with work, sleep or daily life. If any of those describe you, what you're experiencing isn't 'normal heavy' — it's clinically heavy and worth investigating.

What causes heavy periods?

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Many things, often more than one at a time. The most common: uterine fibroids, endometrial or cervical polyps, adenomyosis (endometrial tissue growing into the uterine muscle), hormonal imbalance (especially anovulatory cycles where progesterone is low), the non-hormonal copper IUD, thyroid disorders (under- or over-active), blood-clotting disorders like von Willebrand disease, and certain medications including blood thinners. Identifying the cause matters because each opens a different treatment path.

Are heavy periods dangerous?

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On their own, usually not — but the iron loss is. Chronic heavy bleeding is the leading cause of iron-deficiency anaemia in pre-menopausal women worldwide. Anaemia means exhaustion, breathlessness on stairs, brain fog, hair loss, restless legs, dizziness, and pale skin. Long-term untreated anaemia can affect heart function. If you have heavy periods and any of those symptoms, ask for a full blood count and a ferritin test.

What's the difference between heavy bleeding and a haemorrhage?

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A haemorrhage means active, life-threatening blood loss — soaking through a pad or tampon every 15–30 minutes, large clots continuously, lightheadedness, fainting, pale skin or rapid heartbeat. That is an emergency room situation. Heavy menstrual bleeding (menorrhagia) is severe but not immediately life-threatening — it's something to investigate with your doctor in the days or weeks after.

Will an IUD help?

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It depends which one. The hormonal IUD (Mirena and similar) is one of the most effective treatments for heavy menstrual bleeding and is often the first non-surgical option a gynaecologist will suggest. The non-hormonal copper IUD does the opposite — it commonly increases bleeding. If you have a copper IUD and heavy periods, that's a conversation worth having with your doctor.

Do I need to take iron?

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If your blood tests show anaemia or low ferritin (the iron-storage protein), then yes — and your doctor will guide you on dose. For prevention, women with consistently heavy periods often benefit from increasing dietary iron (red meat, dark poultry, lentils, spinach, fortified grains) paired with vitamin C (which boosts non-haem iron absorption), and avoiding tea or coffee around iron-rich meals (the polyphenols inhibit absorption). Don't self-supplement high-dose iron without testing — too much iron has its own problems.

Do supplements actually help with heavy periods?

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No supplement is going to cure heavy bleeding caused by fibroids or polyps — those need their own treatment. What lifestyle and nutrition can help with is the wider picture: supporting healthy hormonal balance, maintaining iron status, lowering inflammation, and supporting the liver's role in oestrogen clearance. The strongest evidence is around iron correction, vitamin D, omega-3s, and a polyphenol-rich diet pattern.

How is Beyond Cactus+ relevant to heavy periods?

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Beyond Cactus+ is a daily plant-based wellness ritual built on three antioxidant pillars and a seven-berry mix. It is not a treatment for heavy bleeding and we do not claim it stops or reduces flow. What it offers is concentrated polyphenol intake — and an acerola-derived natural source of vitamin C, which supports iron absorption when taken with iron-rich meals. We position it as part of the wider lifestyle approach. If your bleeding is severe enough to cause anaemia, please have it properly investigated by a doctor.

Sources & further reading.

• Mayo Clinic — Menorrhagia (heavy menstrual bleeding)
• NHS — Heavy periods
• Cleveland Clinic — Menorrhagia
• ACOG — Heavy Menstrual Bleeding FAQ
• NIH Office on Women's Health — Period problems
• PubMed — heavy menstrual bleeding & iron