What causes a biochemical pregnancy?

In general, biochemical pregnancy may be caused by chromosomal abnormalities, luteal phase defect, poor endometrial receptivity, endocrine disorders, endometriosis, etc. It is recommended to seek medical attention promptly and receive symptomatic treatment under the guidance of a physician. Specific analyses are as follows:

1. Chromosomal Abnormalities

During fertilization, errors in chromosome replication may occur when sperm and egg combine, leading to an abnormal number of chromosomes in the embryo, ultimately resulting in a biochemical pregnancy. In most cases, no special treatment is required, as the body naturally eliminates the abnormal embryo.

2. Luteal Phase Defect

If luteal function is insufficient, the endometrium may not develop properly, making it difficult for the embryo to successfully implant or sustain early pregnancy, eventually leading to biochemical pregnancy. Progesterone supplementation, as prescribed by a doctor, can help enhance luteal function.

3. Poor Endometrial Receptivity

Natural developmental issues in women—such as an endometrium that is too thin, too thick, or abnormally shaped—can impair the embryo's ability to implant. Severely impaired receptivity may trigger a biochemical pregnancy. Regular dietary adjustments and moderate exercise may help improve the endometrial environment.

4. Endocrine Disorders

Unhealthy作息 (lifestyle habits), such as irregular sleep patterns and poor living habits, may lead to endocrine imbalances, affecting hormone levels and thereby interfering with normal endometrial development and embryo implantation, potentially causing biochemical pregnancy. Symptoms may include menstrual irregularities and weight changes. It is recommended to follow medical advice and use medications such as levothyroxine sodium tablets, dydrogesterone tablets, and estradiol valerate tablets for treatment.

5. Endometriosis

Endometriosis occurs when endometrial tissue grows outside the uterine cavity, causing inflammation and adhesions in the uterus, which may interfere with embryo implantation and result in biochemical pregnancy. Symptoms may also include dysmenorrhea and pain during intercourse. Patients are advised to follow medical instructions and use medications such as Guizhi Fuling capsules, gestrinone capsules, or danazol capsules to relieve symptoms.

Maintaining a healthy lifestyle, avoiding exposure to harmful substances, and regulating hormonal balance are important preventive measures to reduce the risk of biochemical pregnancy.