What causes miscarriage? There are 4 main reasons

Miscarriage in pregnant women may be caused by genetic factors, generally considered to be abnormal chromosome number or structure. However, it may also be caused by harmful chemicals and other types of adverse environmental stimulation. If the embryo has endocrine dysfunction, or the pregnant woman suffers from reproductive system diseases and systemic diseases, it can also lead to miscarriage.

Some women may experience miscarriage after pregnancy. Although they take measures such as progesterone injections to preserve the pregnancy, it is often useless. Some women even have symptoms of habitual miscarriage. At this time, it is necessary to find the specific cause and treat it in time. So what causes miscarriage?
1. Genetic factors of miscarriage <br/>According to obstetric clinical medical research, miscarriage is related to genetics. Among pregnant women with early spontaneous abortion, chromosomal abnormalities account for more than half. Generally, it is caused by abnormalities in chromosome number and structure, such as X monomer, chromosome breakage, etc.
2. Environmental factors that cause miscarriage <br/>Some adverse environmental factors can cause miscarriage, which can directly or indirectly cause irreversible damage to the fetus and pregnant women. The most common one is that pregnant women are exposed to too much harmful chemicals, such as formaldehyde after the decoration of a new house, or the body is stimulated by physical factors such as radiation, high temperature, etc. for a long time or frequently.
3. Embryonic factors of miscarriage <br/>If abnormalities occur in embryonic function in early pregnancy, especially endocrine dysfunction, which results in the embryonic trophoblast cells being unable to produce sufficient progesterone or placental lactogen and β-chorionic gonadotropin in time, normal pregnancy response cannot be maintained, which may lead to spontaneous abortion.
4. Maternal factors of miscarriage
1. Reproductive system diseases <br/>If a pregnant woman has a reproductive organ disease, such as a uterine septate uterus, uterine hypoplasia or other malformations, or a tumor in the cervix and pelvis, the possibility of miscarriage will increase. For pregnant women who have miscarriages in late pregnancy, it may be due to severe lacerations of the cervix.
2. Other diseases <br/>Systemic diseases can often cause miscarriage. Clinically, high fever, gestational hypertension, chronic nephritis, etc. are common. When infected with cytomegalovirus or herpes virus, and the virus invades the fetal blood circulation, it can directly cause fetal death and miscarriage. In addition, hypothyroidism, diabetes and external trauma can also be the cause of miscarriage in pregnant women.