Heavy Periods: What's Normal, What's Not, and What to Do

TL;DR: Heavy periods (menorrhagia) affect about 1 in 3 women. Common causes include fibroids, hormonal imbalances, polyps, and bleeding disorders. Heavy bleeding is also the leading cause of iron deficiency anemia in women. Treatments range from medication to hormonal options to surgery, you don't have to just put up with it.

Let's be honest: periods are already inconvenient enough without having to worry about bleeding through your clothes, cancelling plans, or feeling completely drained for a week every month.

If your period feels like too much, too heavy, too long, too exhausting, you're not imagining it, and you're definitely not alone. About one in three women will experience abnormally heavy periods at some point in their lives. The medical term for this is menorrhagia (men-or-AY-jee-ah), and it's one of the most common reasons women visit a gynecologist.

Here's the important part: heavy periods are not something you just have to live with. There are real causes and real treatments. Let's walk through it.

What Actually Counts as a "Heavy" Period?

It can be hard to know what's normal when no one really talks about it. So here are some clear markers. Your period may be considered heavy if:

• You soak through a pad or tampon every hour or two for several hours in a row
• You need to use double protection (a pad and a tampon at the same time) to manage your flow
• You regularly pass blood clots larger than a 10p coin (about 2.5 cm or 1 inch)
• Your period lasts longer than 7 days
• You bleed so heavily that it stops you from doing normal activities, missing work, skipping social events, or staying home
• You feel unusually tired, weak, or short of breath during or after your period (this could be a sign of anemia)

If any of these sound familiar, it's worth paying attention. One useful trick: try keeping a period diary for two or three cycles. Note how many pads or tampons you use each day, whether you're passing clots, and how you feel. This gives your doctor something concrete to work with.

Why Are My Periods So Heavy? Common Causes

Heavy periods can have several underlying causes. Sometimes it's more than one factor at play.

1. Uterine Fibroids

Fibroids (non-cancerous growths in the uterus) are one of the most common causes of heavy menstrual bleeding. They can increase the surface area of the uterine lining, leading to more bleeding during your period. Fibroids are especially common in Black women, affecting up to 80% by age 50. (Read our full guide to fibroids to learn more.)

2. Hormonal Imbalances

Your menstrual cycle is regulated by a delicate balance between estrogen and progesterone. When these hormones are out of balance, which can happen with conditions like PCOS, thyroid disorders, or during perimenopause, the lining of your uterus (the endometrium) can build up too much before shedding, resulting in heavier bleeding.

3. Endometrial Polyps

Polyps are small, usually non-cancerous growths that develop on the lining of the uterus. They can cause heavy or prolonged bleeding, as well as bleeding between periods. They're more common as you get older, particularly around perimenopause.

4. Adenomyosis

Adenomyosis (ad-en-oh-my-OH-sis) happens when the tissue that normally lines the uterus grows into the muscular wall of the uterus itself. This can cause the uterus to enlarge and lead to heavy, painful periods. It's sometimes confused with fibroids, but it's a different condition.

5. Bleeding Disorders

Some women have blood that doesn't clot properly. The most common example is von Willebrand disease (VWD), which affects up to 1% of the population. If you've had heavy periods since your very first one, bruise easily, or bleed a lot after dental work or injuries, a bleeding disorder could be the reason.

6. IUDs (Copper Coil)

The copper IUD (intrauterine device) is an effective, hormone-free form of contraception, but one of its known side effects is heavier periods, especially in the first few months after insertion. If your heavy bleeding started after getting a copper IUD, that's likely the connection.

7. Other Causes

Less common causes include certain medications (like blood thinners or aspirin), infections of the uterus, and, rarely, cancers of the uterus or cervix. This is one reason it's important to get persistent heavy bleeding checked out.

Heavy Periods and Iron Deficiency Anemia

This is something that doesn't get talked about enough: heavy menstrual bleeding is the leading cause of iron deficiency anemia (a condition where you don't have enough healthy red blood cells) in women of reproductive age.

Every time you have a heavy period, you're losing iron along with the blood. Over time, your iron stores get depleted. Symptoms of iron deficiency anemia include:

• Constant tiredness and fatigue, even after a full night's sleep
• Feeling weak or lightheaded
• Shortness of breath during everyday activities
• Pale skin, pale nail beds, or pale inner eyelids
• Headaches
• Cold hands and feet
• Heart palpitations (a racing or pounding heartbeat)
• Difficulty concentrating

If this sounds like you, especially around your period, ask your doctor to check your iron levels and ferritin (your body's iron stores) with a simple blood test. (Learn more in our post on iron deficiency anemia in women.)

When Should You See a Doctor?

Don't wait until you're completely run down. See a healthcare provider if:

• You're soaking through a pad or tampon every hour for more than two consecutive hours
• You're passing large clots regularly
• Your period lasts longer than 7 days
• You feel dizzy, faint, or extremely fatigued during your period
• Heavy bleeding is affecting your daily life, work, school, relationships, or mental health
• Your periods have become noticeably heavier than they used to be
• You have bleeding between periods or after sex
• You're experiencing heavy bleeding after menopause (any bleeding after menopause should be investigated)

Heavy periods deserve medical attention. Full stop.

What Tests Will the Doctor Do?

When you see your doctor about heavy periods, they may recommend some or all of the following:

• Blood tests, To check for anemia (low red blood cells or iron), thyroid problems, hormone levels, and clotting disorders
• Pelvic ultrasound, To look for fibroids, polyps, or other structural issues in the uterus and ovaries
• Hysteroscopy (his-ter-OS-koh-pee), A thin camera is inserted through the cervix to look directly inside the uterus. This can help spot polyps, fibroids, or other abnormalities
• Endometrial biopsy, A small sample of the uterine lining is taken and examined under a microscope. This is particularly important for women over 40 or those with risk factors for endometrial cancer
• Blood clotting tests, If a bleeding disorder is suspected, your doctor may test how well your blood clots

These tests are generally straightforward. A pelvic ultrasound is painless. A hysteroscopy or biopsy can cause some cramping, but they're usually quick.

Treatment Options

The good news: there are many effective treatments for heavy periods. The right one for you depends on the cause, your age, and whether you want to have children in the future.

Medications (Non-Hormonal)

• Tranexamic acid, A tablet you take during your period that helps your blood clot more effectively and can reduce bleeding by 30 to 50%. It's not a hormone, it works on the clotting process directly.
• NSAIDs (like ibuprofen or mefenamic acid), Anti-inflammatory medications that can reduce menstrual bleeding by about 20 to 40% and help with period pain at the same time.
• Iron supplements, These won't reduce your bleeding, but they're essential if you've developed anemia. Your doctor may recommend them alongside other treatments. (More on this in our anemia post.)

Hormonal Treatments

• Hormonal IUD (like the Mirena), This is often the first-line treatment recommended by doctors. The Mirena releases a small amount of progestogen (a synthetic form of progesterone) directly into the uterus, which thins the uterine lining and significantly reduces bleeding. Many women find their periods become much lighter or stop altogether. (Compare IUD options in our contraception guide.)
• Combined oral contraceptive pill, The pill regulates your cycle and usually makes periods lighter and shorter.
• Progestogen tablets, Taken for part of your cycle, these can help reduce heavy bleeding caused by hormonal imbalances.
• GnRH agonists, These medications temporarily stop your periods by putting your body into a temporary menopause-like state. They're usually a short-term solution used before surgery.

Surgical and Procedural Options

If medications haven't helped or your heavy bleeding has a structural cause (like fibroids or polyps), your doctor may suggest:

• Polypectomy or myomectomy, Removal of polyps or fibroids while keeping the uterus intact. This is often done via hysteroscopy (through the cervix) and usually doesn't require a hospital stay.
• Endometrial ablation (ab-LAY-shun), A procedure that destroys the lining of the uterus to reduce or stop menstrual bleeding. It's not suitable if you want to become pregnant in the future.
• Uterine artery embolization, A minimally invasive procedure that cuts off the blood supply to fibroids, causing them to shrink.
• Hysterectomy, Removal of the uterus. This is a definitive solution, but it's major surgery and means you can no longer become pregnant. It's generally considered a last resort after other options have been tried.

Practical Tips for Managing Heavy Periods Day-to-Day

While you're working with your doctor on the medical side, here are some things that can help you cope:

• Use the right products for you, Menstrual cups, super-absorbent pads, period underwear, or a combination. There's no single right answer, use whatever helps you feel comfortable and secure.
• Prepare a period kit, Keep a small bag with spare underwear, pads or tampons, wet wipes, and a change of clothes in your bag, car, or workplace.
• Protect your bedding, A dark towel or waterproof mattress protector can save you a lot of stress at night.
• Eat iron-rich foods, Red meat, spinach, lentils, beans, fortified cereals, and dark chocolate all contain iron. Pairing iron-rich foods with vitamin C (like citrus fruits) helps your body absorb the iron better.
• Stay hydrated, You're losing fluid, so drink plenty of water during your period.
• Rest when you need to, Heavy periods can be physically exhausting. It's okay to slow down.
• Track your cycle, Apps like Clue, Flo, or even a simple notebook can help you spot patterns and give your doctor useful data.

The Bottom Line

Heavy periods are incredibly common, but that doesn't mean they're "normal" or something you should just accept. They can have a real impact on your health, especially through iron deficiency anemia, and on your quality of life.

If your period feels like too much, it probably is. Talk to a doctor. Get tested. Explore your options. You deserve to not dread a quarter of every month.

References

1. NICE (National Institute for Health and Care Excellence). "Heavy Menstrual Bleeding: Assessment and Management." nice.org.uk
2. American College of Obstetricians and Gynecologists. "Heavy Menstrual Bleeding." acog.org
3. Cleveland Clinic. "Menorrhagia (Heavy Menstrual Bleeding)." clevelandclinic.org
4. Office on Women's Health. "Heavy Menstrual Bleeding." womenshealth.gov
5. PMC. "Iron Deficiency Anaemia in Women: A Practical Guide to Detection and Management." pmc.ncbi.nlm.nih.gov
6. CDC. "Heavy Menstrual Bleeding." cdc.gov

Related posts on Asele:

• Uterine Fibroids: What Every Woman Needs to Know
• PCOS Explained: Symptoms, Causes, and What You Can Do About It
• Why Is My Period Irregular? Causes, Concerns, and When to See a Doctor
• Contraception Methods Compared: Which One Is Right for You?
• Iron Deficiency Anemia in Women: Symptoms, Causes, and Treatment