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What Causes Heavy Periods?

Published in Menstrual Health 2 mins read

Heavy periods, also known as menorrhagia, can stem from a variety of factors, often related to hormonal fluctuations or underlying medical conditions. These can make menstruation particularly challenging for many individuals. Here's a breakdown of the common causes:

Hormonal Changes and Life Stages

Periods can sometimes be heavier during different life stages due to hormonal shifts:

  • Early Menarche: When you first start having periods, your cycle may be irregular and sometimes heavier.
  • Post-Pregnancy: After giving birth, periods may be heavier as your body recovers and hormone levels readjust.
  • Perimenopause: As you approach menopause, hormonal changes can lead to heavier and more unpredictable periods.

Medical Conditions

Certain health conditions affecting the reproductive organs can also contribute to heavy periods:


Condition Description
Polycystic Ovary Syndrome (PCOS) A hormonal disorder that can affect ovulation and menstruation, often leading to irregular and heavy bleeding.
Fibroids Non-cancerous growths in the uterus that can cause heavy or prolonged periods.
Endometriosis A condition where tissue similar to the lining of the uterus grows outside of it, causing painful and heavy periods.
Adenomyosis Occurs when the uterine lining grows into the muscle wall of the uterus, leading to heavy and painful periods.
Pelvic Inflammatory Disease (PID) An infection of the female reproductive organs that can lead to inflammation and abnormal bleeding.


Other Potential Factors:

  • IUDs: Some intrauterine devices can make periods heavier, especially in the initial months after insertion.
  • Bleeding Disorders: Conditions that affect blood clotting can cause heavy menstrual bleeding.
  • Medications: Certain medications can interfere with blood clotting and may lead to heavier periods.
  • Infections: Infections can sometimes contribute to heavier menstrual bleeding.
  • Cervical or Uterine Problems: In rare cases, abnormalities or cancer in the cervix or uterus may cause heavy periods.

When to Seek Medical Help

If you experience very heavy periods that disrupt your daily life or if you have concerns, it's important to consult a healthcare professional. They can help diagnose the cause and recommend the best course of treatment. It is also a good idea to consult with your doctor if you experience any of these symptoms with your heavy period:

  • Passing large clots.
  • Soaking through tampons or pads every hour.
  • Heavy bleeding lasting more than 7 days.
  • Symptoms of anemia, such as fatigue or shortness of breath.

Understanding the potential causes of heavy periods allows individuals to better manage their menstrual health and seek appropriate medical care when needed.