The age at which a woman goes through menopause is between 45-55 years old, with an average age of 49. The age at which ovarian decline occurs is different for each individual, and there is a period of transition before menopause occurs, characterized by memory loss, prolonged menstrual cycles, and the gradual onset of cardiovascular problems, such as night sweats and other pre-menopausal signs. The length of time varies from person to person, and may last for several years. The main reason for this is the decrease in ovarian function and the number of functioning follicles, which leads to the appearance of some symptoms. After menopause, there will be no vaginal bleeding, but if there is abnormal bleeding, then pay attention to the thickness of the lining, more than 5mm should be actively scraping or hysteroscopy.