What are the causes of miscarriage in the fifth month of pregnancy?

Every pregnant woman wants the fetus to develop normally and healthily during pregnancy. However, some women have miscarriages at 5 months of pregnancy. So many women who have miscarriages at this stage want to know specifically what are the causes of miscarriage at 5 months of pregnancy? The following content provides specific answers, and you can see what the causes are.

1. Age factor: Through investigations in the general population and infertile patients, it was found that male age is related to embryo quality, miscarriage rate, and pregnancy rate. The semen volume, sperm morphology, and sperm motility of older men all decrease, but no significant decrease in sperm density has been found.

2. Psychological factors: B. Zorn et al. evaluated the psychological factors of 1076 infertile couples and found that male psychological factors will affect the quality of semen, and low ability to handle stress will increase the incidence of early pregnancy loss.

3. Inflammation or infection of the male reproductive tract, such as epididymo-orchitis and prostatitis, can cause an increase in leukocytosis in semen, elevated ROS levels, and DNA damage, thereby affecting the quality of the embryo and leading to pregnancy loss.

4. Smoking: A large number of studies have found that active smoking in women can increase the rate of pregnancy loss, while there is no consensus on the research conclusions on the relationship between passive smoking exposure and the risk of pregnancy loss in women. Scott et al. believe that heavy smoking in men can increase the risk of early pregnancy loss and delay clinical pregnancy by increasing the exposure of the mother or father.

5. Some male lifestyle behaviors such as taking a sauna or special occupations such as welding, baking, and driving can cause testicular overheating, which can cause sperm DNA damage by increasing the histone/protamine ratio. Sperm DNA damage is one of the causes of pregnancy loss.

There are many reasons for miscarriage at 5 months of pregnancy. Not only are there reasons related to the woman’s physical constitution and age, but there are also reasons related to men. Therefore, for many women who have miscarriage at 5 months of pregnancy, after understanding some of the reasons for miscarriage introduced above, it is best to go to the hospital for a comprehensive examination. Both people must undergo the examination in this way to find out the cause of miscarriage and improve it as soon as possible through treatment.