Your period blood loss is the shedding of the uterine lining that occurs when an egg is not fertilized during your menstrual cycle.
The Menstrual Cycle and Blood Loss
During a typical menstrual cycle, the uterus prepares for a potential pregnancy by thickening its lining (the endometrium). If fertilization doesn't occur, this lining is no longer needed and is shed. This shedding process results in the blood and tissue that you experience as your period. According to provided information, "if an egg is not fertilized, the uterine lining breaks down, and bleeds." The egg and the uterine lining are then shed during your period.
Potential Causes of Heavy Bleeding
While period blood loss is a normal part of the menstrual cycle, some factors can influence the amount of bleeding. Heavy bleeding can be caused by:
- Hormone Problems: Imbalances in hormones can affect the thickness of the uterine lining, leading to heavier periods.
- Conditions Affecting the Uterus: Conditions like fibroids or polyps in the uterus can cause increased bleeding.
- Diseases or Bleeding Disorders: Certain diseases or disorders that affect blood clotting can also result in heavier menstrual flow.
In summary, your period blood loss is primarily due to the natural shedding of the uterine lining when pregnancy doesn't occur, although hormonal imbalances, certain uterine conditions, and other medical issues may cause heavy bleeding.