Causes of Miscarriages

6 Most Common Causes of Miscarriages That You Should Know!

Miscarriages are the unfortunate and unpleasant experiences of life. But unfortunately, about 10-15 percent of known pregnancies suffer and end due to miscarriage. Miscarriage is the term used to describe the early loss of pregnancy before 20 weeks of pregnancy.

Every woman is afraid of this word from the start of her pregnancy. But over time, the pregnancy becomes secure and the chances of miscarriage become less with the start of the second trimester. Your gynecologist can guide you about the precautions according to your condition.

Here are some common causes of miscarriages during pregnancy;

History of Miscarriages:

Having a previous history of miscarriages increases the risks of it in further pregnancies. Researchers have proven that females with recurrent miscarriage history are more susceptible to it in the future. On the other hand, having a healthy pregnancy before the current pregnancy may decrease the chances of miscarriage in the current pregnancy.

Chromosomal abnormalities:

The most common reason behind miscarriages is a chromosomal abnormality. IN normal human cells, the number of chromosomes is 46. During the formation of the gametes this number becomes have like 23 in sperms (in case of male) and 23 in eggs (in females). But if this number becomes abnormal, like less than 23 or more, then the embryo (start of pregnancy) developing from this type of cell, that has an abnormal genome, leads to miscarriage.

About 50 percent of miscarriages occur due to this abnormality.


The infections of the uterus and cervix can be dangerous to a developing baby and lead to miscarriage. Other infections that may pass to the baby or placenta can also affect a developing pregnancy and may lead to miscarriage.

Some of these infections include:

  • listeria
  • parvovirus B19
  • Toxoplasma gondii
  • rubella
  • herpes simplex
  • cytomegalovirus

Anatomical Factors:

If the woman has an abnormally shaped uterus or some problem in the uterine cavity, the chances of miscarriages are very high. During the growth of a woman, if her uterus is not normally developed in shape and size, the chances of miscarriages are very high.

The fertilized egg needs a normal environment of the uterus to implant itself in it. But if the scar is formed due to D&C or any reason, it may be difficult for the fertilized egg to implant itself at a good site in the uterus. This leads to early miscarriage of pregnancy.

Fibroids in the uterus also become the cause of miscarriage if the embryo is attached directly to it.

Clotting disorders:

Clotting disorders are conditions that cause your body to form more blood clots than normal. For example, lupus anticoagulant and antiphospholipid syndrome are the most common conditions that become the cause of miscarriages.

In the case of pregnancy, blood clots can form in the placenta. This prevents nutrition and oxygen from reaching the growing embryo and prevents waste from being carried away.

Maternal medical history: 

If the mother has a medical problem or undergoing some treatments. It may become the reason for early miscarriage. Uncontrollable diabetes is very dangerous for early pregnancy.

Mothers taking any chemotherapy or radiation therapy have high chances of loss of a pregnancy at the early stages.

You should discuss your family and medical history with your gynecologist at the start of your pregnancy or while you are planning to have a baby. Your gynecologist can guide you for the treatment plans according to your health. It is better to get yourself and your partner checked and tested before planning a pregnancy. You can consult the best Gynecologist in Lahore through Marham-an online platform to find, book, and consult the best health specialists.

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