Tebolone, when taken one tablet a day for eight years, may cause the following hazards: 1. It may induce hormone-dependent tumors, such as tumor lesions in the breast, uterus or adnexa, because these tumors are closely related to changes in estrogen levels in the human body, and long-term use of estrogen-like drugs may lead to a higher risk of the disease. 2. This may lead to vascular-related lesions, such as increased viscosity of the patient’s blood vessels, which may lead to deep vein thrombosis, angina pectoris, myocardial infarction in the heart, or cerebral infarction in the brain. 3. 4. It may lead to irregular vaginal bleeding.