Why does miscarriage happen?

Some women experience miscarriage, also known as miscarriage, after becoming pregnant. This is very likely to happen in the first three months of pregnancy. There are many reasons for miscarriage in women, including emotional changes, sexual life, fetal maldevelopment, etc. Learn more about why miscarriage occurs?

1. Sudden changes in emotions: Pregnant women’s emotions are severely stimulated, and excessive sadness, shock, fear, and excessive emotional excitement can cause environmental imbalance in the pregnant woman’s body, prompting uterine contractions and causing miscarriage.

2. Genetic factors: Genetic abnormalities are the most common cause of spontaneous abortion. Chromosomal abnormalities account for 50% to 60% of early abortions. Chromosome abnormalities can be divided into numerical abnormalities and structural abnormalities. Abnormal chromosome numbers include polyploidy, trisomy, monosomy, etc.; structural abnormalities include chromosome breakage, deletion, and translocation, etc. Most embryos with chromosomal abnormalities will result in miscarriage. The causes of chromosomal abnormalities include inheritance from parents and the influence of acquired environmental factors.

3. Placental maldevelopment: The fetus grows and develops in the mother's body, and the mother's nutrients and oxygen are mainly transported to the fetus through the placenta. If the placenta is maldeveloped or diseased, the fetus will not get nutrients and oxygen and will stop growing, causing miscarriage.

4. Incompatibility of blood types between mother and child: If the pregnant woman has received blood transfusions in the past, or if coagulant factors that are incompatible with her blood type are produced during pregnancy, the fetus's cells will agglutinate and hemolyze, thus causing miscarriage.

5. Maternal factors: Pregnant women suffering from certain diseases, such as acute infectious diseases, can cause fetal death or miscarriage; corpus luteum insufficiency, hypothyroidism or hyperthyroidism, and diabetes can affect the development of the decidua, placenta, and fetus and cause miscarriage.

6. Environmental factors: Environmental factors that can cause spontaneous abortion include physical, chemical and biological factors. Such as radioactive substances, heavy metals, DDT, pesticides and TORCH infection (rubella virus, herpes virus, cytomegalovirus and toxoplasmosis, etc.). If there is adverse environmental exposure before or after pregnancy, it may cause spontaneous abortion.