8 major causes of spontaneous abortion

　　What are the causes of spontaneous abortion? ? There are many reasons for miscarriage and they are quite complicated. The main reasons are as follows:

　　(1) Embryo underdevelopment: Abnormal pregnancy eggs are the main cause of early miscarriage. About 80% of miscarriages in the first two months of pregnancy are due to sperm There is some kind of defect in the egg, which causes the embryo to develop to a certain extent and terminate. Therefore, the original embryonic tissue cannot be seen in the discharge of this kind of abortion.

　　(2) Endocrine dysfunction: Under the action of progesterone, the fertilized egg can Uterus Implantation on the wall, growth and development into fetus . When the secretion of progesterone in the body is insufficient, the uterine decidua will be underdeveloped, thus affecting the development of fertilized eggs and easily causing miscarriage. If prostaglandins increase, it will cause frequent contractions of the uterine muscles and may also lead to miscarriage. Reduced thyroid function can impede the oxidative capacity of cells, thereby affecting the growth and development of the embryo and leading to miscarriage.

　　(3) Reproductive organs disease : Uterine malformations such as bicornuate uterus, septate uterus, and uterine dysplasia. Pelvic tumors, especially submucosal fibroids, can affect the growth and development of the fetus and lead to miscarriage. Loose intrauterine os or deep cervical laceration can cause premature rupture of membranes and late miscarriage.

　　(4) Systemic diseases in pregnant women: Pregnant women suffer from acute infectious diseases such as influenza, typhoid, and pneumonia. Bacterial toxins or viruses enter the fetus through the placenta, causing fetal poisoning and death. High fever can promote uterine contraction and cause miscarriage. Pregnant women suffering from severe anemia , heart failure, chronic nephritis and hypertension and other chronic sexually transmitted diseases , can cause fetal disability due to placental infarction and intrauterine hypoxia, leading to miscarriage. Malnutrition in pregnant women, especially vitamin deficiency, as well as mercury, lead, and alcohol poisoning can cause miscarriage.

　　(5) Trauma: The pregnant woman’s abdomen is hit or squeezed by external forces, and the pregnant woman falls or participates in heavy physical labor or strenuous sports.； Abdominal surgery such as appendicitis or ovarian cyst surgery can cause uterine contractions and cause miscarriage. 》》》  What should pregnant women eat that can cause miscarriage?

　　(6) Sudden changes in emotions: A pregnant woman's emotions are greatly stimulated. Excessive sadness, fright, fear, and excessive emotion can cause an imbalance in the internal environment of the pregnant woman, prompting uterine contractions and causing miscarriage.

　　(7) Placental dysplasia: 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 develops poorly or has disease, the fetus will not get nutrients and oxygen and will stop growing, causing miscarriage.

　　(8) Incompatibility between maternal and fetal blood types: Pregnant women have received blood transfusions in the past, or during pregnancy, they produce coagulation factors that are incompatible with their blood types, which can cause agglutination and hemolysis of the fetal cells, leading to miscarriage.