At what age is a woman considered menopausal?

　　The onset of menopause may vary slightly depending on region, climate, race, economy, nutrition, age at menarche, marriage and childbirth, and contraceptive methods. In 1980, our country surveyed more than 130,000 women in 29 provinces and cities. Naturally, menopause The age is between 42-58 years old, with an average age of 49.5. Of course, there are some who are as early as 39 years old and as late as 60 years old. An earlier or later age at menopause should warrant attention until no other abnormalities are identified. In fact, 95% of menopause occurs around the age of 50, and rural women are 2 years earlier on average than urban women. In 1989, the National Center for Perimenopausal Women was established by Nanjing Medical College and organized by 23 units across the country. healthy The survey cooperation group conducted a sample survey of about 2,000 women in three groups: medical personnel, teachers, female textile workers, and farmers. The results showed that the average age of natural menopause is 49+-3.7 years old, with only 3.1% under 40 years old, and 1.1% under 35 years old. The factors that influence the age of menopause are analyzed: the age of menarche, the mother's age of menopause, whether she has been pregnant or not, agricultural area and city, culture and nature of work, etc. However, the proportion of menopausal symptoms does not change with the age of menopause. Some people have early menopause without discomfort, and some people have symptoms of discomfort for a long period of time before complete menopause. According to the measurement of physiological indicators, menopause begins about 10 years before menopause, that is, around the age of 40. It takes about 10 years after menopause for ovarian function to completely disappear and people enter old age.