Since the exact causes of breast cancer are not fully understood, prevention of breast cancer involves early examination. It is recommended that women under the age of 35 undergo a clinical examination every six months and a breast ultrasound once a year. For women over the age of 35, it is advised to have a breast ultrasound every six months and a mammogram once a year. Early detection and early treatment are the most important aspects of breast cancer prevention. Learn self-examination, and if you feel a noticeable lump, it is recommended to regularly visit a breast clinic or surgical clinic for diagnostic tests and treatment.