Heavy menstrual bleeding can happen for several reasons, often due to hormone imbalances that make the uterine lining thicker than usual, leading to more blood during periods. Other common causes include uterine problems such as fibroids, polyps, endometriosis, and adenomyosis, as well as bleeding disorders, pregnancy-related issues, certain medications, and sometimes cancer of the reproductive organs. Stress and approaching menopause can also affect menstrual flow. If bleeding is very heavy, lasts a long time, or is accompanied by other symptoms like fatigue or passing large clots, it's important to see a healthcare provider for proper diagnosis and treatment.
Common Causes of Heavy Period Bleeding
- Hormone imbalance leading to a thick uterine lining
- Uterine fibroids (noncancerous growths)
- Uterine polyps
- Endometriosis and adenomyosis
- Bleeding disorders like von Willebrand disease
- Pregnancy complications such as miscarriage or ectopic pregnancy
- Use of certain birth control like non-hormonal IUDs
- Some medications, including blood thinners
- Rarely, cancer of the uterus or cervix
When to Seek Medical Advice
- Bleeding requiring frequent pad/tampon changes (every 1-2 hours)
- Passing large blood clots or bleeding through clothes
- Periods lasting more than 7 days
- Feeling very tired or short of breath, which may indicate anemia from blood loss
A healthcare provider can evaluate symptoms, run tests if needed, and recommend treatments to manage heavy menstrual bleeding effectively.
