Mammograms are radioactive, but a single dose of radiation is small and has little effect on the human body. However, mammograms are very important for the diagnosis of breast diseases. If the mammogram is done only once a year, the radiation dose to the human body is relatively low, but if the mammogram is done several times a year or long-term exposure, the damage to the human body is relatively large. If the patient is pregnant, the examination cannot be carried out, the radiation may lead to the emergence of deformed babies, miscarriage. Considering the fact that mammography can be harmful to the body, it is important to consult with your doctor before undergoing the examination, and to selectively undergo the examination according to your actual situation. Mammogram can clearly show all layers of breast tissue, and can detect breast hyperplasia, various benign and malignant tumors and breast tissue structure disorders, which is the most effective and reliable way to detect and diagnose breast cancer at an early stage. If the patient has any discomfort, it is recommended to consult a doctor in time for examination and treatment under the doctor’s guidance. At the same time, in daily life, to protect breast health, usually less late at night, control emotions, pay attention to light diet.