Factors causing menarche in girls

Today we are going to focus on and discuss the issue of girls' menarche. For adolescent girls, of course, including our parents and boys, it is recommended that they learn more about this and work together to care for and protect the girls around them. So what exactly is a girl's menarche? What age or time is generally within the normal range? How does it occur and what is the related cycle?

Starting from puberty, the eggs in the ovaries gradually develop, mature and are released. At the same time, the ovaries secrete estrogen and progesterone, which promote the thickening of the endometrium and the proliferation of blood vessels, creating conditions for the fertilized egg to develop, mature and implant in the uterus. If the released egg is not fertilized, the secretion of estrogen and progesterone in the ovaries will decrease rapidly, causing necrosis and shedding of endometrial tissue and rupture and bleeding of blood vessels. The discharge of shed endometrial fragments along with blood from the vagina is called menstruation.

A girl's first menstrual period is called menarche. Most girls have their first period between the ages of 12 and 14. Before menarche, girls' breasts begin to develop, their height grows suddenly, and some have already grown pubic or armpit hair. Generally speaking, menarche is often anovulatory menstruation, and ovulation occurs several months to a year after menarche.

As we all know, before puberty, the reproductive organs develop slowly and are in a childish state, and then develop rapidly after entering puberty. The ovaries are very small before the age of 8, develop rapidly between 8 and 10 years old, and then grow rapidly. The uterus also develops rapidly during the age of 10, with the body of the uterus significantly increasing in size and doubling in length. Menstruation is related to cyclical changes in the ovaries and endometrium.

At menarche, the ovaries weigh only 40% of their mature weight. The ovaries continue to develop and grow. Due to the instability of ovarian function and regulation, menstruation may not occur regularly every month within half a year to a year after menarche. After menarche, some women may have their second menstruation after several months, half a year or even a year. This is not a pathological phenomenon and menstruation will occur on time every month in the future.

Through the above information sharing, I believe that everyone has a preliminary understanding of girls' menarche. For girls of this age, they also need to pay more attention to these physical changes and be mentally prepared. There is no need to be too nervous or worried. These are all necessary stages in life and there is no need to be taboo. Only by relaxing your mind and understanding it can you face the arrival of normal menarche.