What causes homocysteine to affect pregnancy?

Homocysteine is high because of physiological factors and hypothyroidism, hepatitis B and other disease factors, whether it will affect pregnancy, should be judged according to the cause. First, physiological factors such as mental stress, stay up late and other factors can affect homocysteine metabolism, resulting in homocysteine high. This situation will not cause harm to health, nor will it affect pregnancy. II. Disease factors 1. Hypothyroidism Hypothyroidism is a disease caused by thyroid deficiency, thyroid destruction, iodine deficiency, autoimmune damage and other factors, which can lead to slower basal metabolic rate of the body, which in turn affects homocysteine metabolism and causes homocysteine high. Hypothyroidism can lead to irregular menstruation and abnormal ovulation, which reduces the chances of conception. If a woman successfully conceives, it can also lead to miscarriage and fetal termination. 2. Viral hepatitis B liver is an important organ of homocysteine metabolism. After patients develop viral hepatitis B due to hepatitis B virus infection, liver function can be impaired, homocysteine metabolism is abnormal, and homocysteine is high. If patients with viral hepatitis B are not treated in time, the disease can lead to immune system disorders, affecting the chance of conception, even if successful pregnancy, the virus may also be transmitted to the fetus through the placenta, causing adverse effects on fetal growth and development.