A miscarriage is when pregnancy ends before the 20th week or when the baby weighs less than 500 grams. 80% of miscarriages occur before 12 weeks and the incidence of miscarriage decreases rapidly after this week. The cause of miscarriages in this period is mostly chromosomal abnormalities. As the age of the expectant mother and father increases and the number of births increases, the miscarriage rate increases. This means that miscarriage can be caused by the baby itself and by maternal or paternal causes.
Among the maternal causes;
– A number of infections
– Chronic diseases
– Hormonal disorders (such as low thyroid hormone, diabetes, low progesterone hormone).
– Smoking, alcohol use, radiation, environmental and occupational causes (exposure to lead, arsenic, formandehide, benzene, etc.).
– Problems with the immune system and with platelet cells that help the blood to clot.
– Congenital or acquired structural disorders of the uterus (myoma etc.)
– Cervical insufficiency.
There are fewer paternal factors.
Sperm chromosomal disorders and some viral infections.
The miscarriage rate for all pregnancies is between 20% and 40%.