Passing of blood clots during periods is a phenomenon which every woman experiences at one or other time of her reproductive years. While they may ring a warning bell in your ears, the fact is that most of the time passing clots with menstruation blood is absolutely normal even when the clots are quite big in size.
Causes of Blood Clots During Periods
Normally blood produces anticoagulant factors which maintains the viscosity of blood and do not let blood clot but sometimes when the flow is heavy these anticoagulant factors do not get enough time to work and hence clots begin to form. However, this is a normal phenomenon during periods. Somehow blood clots become a cause of concern when they are larger than the size of a woman’s fist, passed throughout the periods excessively, occur after periods and come along with pain.
The Common Causes Of Blood Clots Include
1. Poly Cystic Ovary Syndrome (PCOS)
PCOS is the most common female hormonal problem. When a woman suffers from PCOS the delicate balance between the female hormones – estrogen and progesterone gets disturbed. This disturbance leads to irregular and heavy bleeding along with passage of clots.
When the inner lining of the uterus, which is known as endometrium, begins to grow outside the inner part of uterus, it is known as endometriosis. This mucous membrane behaves just like normal endometrium mucous membrane and begins to bleed during the periods. This lining comes out in globs which look like big clots coming out during periods. Endometriosis is a painful condition too.
3. Uterine Fibroids
Uterine fibroids are a common occurrence during childbearing years. According to an estimate, 1 in 5 women have uterine fibroids. The good news is that uterine fibroids are benign (non-cancerous) tumors. They grow either inside the uterine cavity or on the uterine wall. Fibroids can be very tiny which needs to be seen under a microscope but they keep on growing slowly till the woman menstruates and they can become quite big in size over a period of time. Generally, more than one fibroid grow in a woman’s womb. These fibroids are hypersensitive to the hormone estrogen. During periods, when a woman’s estrogen levels grow, these fibroids also grow and their growth causes heavy bleeding along with large blood clots.
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Polyps are fibroid like foreign growths in the inner wall of the uterus which tend to bulge out in the uterine cavity. If these polyps grow big in size then they tend to obstruct the flow of blood from the uterus during menstruation periods. This accelerates the process of clot formation in the uterus.
5. Other Chronic Factors
Some other chronic factors in body which tend to affect the balance between the two female hormones can also lead to blood clots during periods. These factors include sudden weight gain or weight loss, long term use of steroids, changes in hormonal levels of a woman due to menopause, use of hormone based medications for infertility or other reproductive problems, etc.
6. Enlarged Uterus
During pregnancy the uterus size grows in order to accommodate the growing baby. Post delivery, the uterus begins to shrink to come back to its normal shape and size. Sometimes, when the uterus does not shrink back to its normal size it causes a large amount of blood pool into uterus. This blood tends to clot inside uterus before being passed out and results in big clots during menstruation.
If the passage of large blood clots becomes a regular feature along with painful cramps then it should be taken seriously and medical advice should be sought to rule out any abnormality.