At what age do girls start to develop? Girls begin to develop after puberty. Now that living conditions are good and girls are well nourished, their development is also advanced year by year. Parents are advised to master relevant knowledge and choose meals correctly. Let's see how older girls begin to develop.
How old do girls start to develop 1? It is normal for girls to develop to 12 at the age of eight. However, many girls develop early, which is mainly influenced by environmental factors and dietary factors. The average developmental age of female students is between 10- 12, and developing female students should do well in all aspects of health care.
There is a standard age for development: from 8 years old to 12 years old, girls begin to develop normally. Experts say that adolescent sexual development begins with breast development, menarche marks maturity and adolescence ends. This development period usually lasts for two or three years, and the average age of breast development is 10~ 12 years old.
There is a normal range of adolescent sexual development of girls. According to domestic surveys, most girls in big cities begin to develop at the age of 9 years and two months. Generally speaking, the average age of female students in China is around 10. Generally speaking, breast development is normal from the age of 8 to 12. If it is earlier than 8 years old, it is medically judged as precocious puberty, and later than 13 years old, it is called precocious puberty.
In addition, some children who develop after 12 years old have abnormal conditions, so it is more appropriate to advance the age of late development to 12 years old. Experts said that in the early years, most girls in China began to develop in the second day of the first grade, but now, many girls in the fifth and sixth grades and the eleventh and twelfth years of primary school have begun to develop, and their development age is generally advanced.
There are many reasons, such as the improvement of living standards, good health, good nutrition absorption, environmental factors such as hormone residues in food, soil and water, heavy metal pollution, plastic products such as beverage bottles and so on. , all have similar hormonal effects, which can promote development in advance. In the era of information development, television and online media have a great influence on children. Long-term exposure to a large number of pictures related to sex can stimulate hormone secretion and advance development.
Girls will develop at different ages, and most of them will start to develop between the ages of 10 and 12. This is a normal phenomenon, but there are also phenomena of late development, mainly caused by insufficient nutrition in the body. It is necessary to supplement the nutrients needed by the body to ensure the normal development of the body. Girls should do comprehensive nursing in the development stage.
At what age do girls begin to develop? 2. Several stages of girls' development.
The first stage: 9~ 10 years old
From the age of 9 to 10, girls begin to develop. At this stage, the girl's pelvis gradually widens and is a little convex. Parents should explain this knowledge to their children.
The second stage: 10~ 1 1 year.
At this stage, the girl's breasts will bulge like hills. If you touch them carefully, you can also touch the lump in the breast, which is what we often call the breast.
Stage 3: 1 1~ 12 years old
If you look closely, you will find a small amount of fluff in the girl's genitals. Many people mistakenly think that this is hair, but it is not.
Stage 4: 12~ 13 years old
Girls are about 12 years old. Under the stimulation of ovaries, breasts will grow faster, which may make people feel uncomfortable and painful, but these normal physiological phenomena need not be worried too much.
Stage 5: 13~ 14 years old.
At this stage, girls will menstruate for the first time, also called menarche. After menstruation comes, it means that girls enter puberty, the speed of breast development will also accelerate, and some armpit hair will grow under their armpits.
Stage 6: 14~ 15 years old
When the girl 14 years old, the pelvis will further develop and widen, and the hair will officially grow out to replace the previous appearance. The mammary glands in the breast are fully developed, and the fat and blood vessels in the breast are obviously increased.
How old are girls? Three "milestones" in girls' development.
9 ~ 10 years old
When sexual development begins, the pelvis bears the brunt. We found that the pelvis began to widen quietly during this period. Then there is the chest, one or both sides of which rise slowly like spores.
10 ~ 1 1 year
The breast bulges like a hill. If you touch it carefully, you can feel a slightly hard lump. At the same time, the areola area is enlarged, indicating that the breast begins to develop.
1 1 ~ 12 years old
The pudenda began to grow a small amount of short and thin fluff, but it was not real hair.
12 ~ 13 years old
Stimulated by estrogen secreted by the ovary, the growth of the breast is obviously accelerated, and you may feel slight pain. But don't be nervous, this is a physiological phenomenon in the process of development. After the breast matures, the pain will naturally disappear.
13 ~ 14 years old
Most girls have their first period, which is called menarche (some may be 1 1 ~ 12 years old, others may be 18 ~ 19 years old). Menstruation is one of the important signs of adolescence. At menarche, the ovarian function is unstable, so the menstrual cycle is often irregular. Later, with the improvement of physical development, menstruation will naturally become regular. Ovulation usually occurs in the second year after menarche and begins after the menstrual cycle is normal. Ovulation is possible every cycle. At the same time, armpit hair began to grow on both sides.
14 ~ 15 years old
The pelvis is further widened obviously, and the menstrual cycle is initially formed. If the menstrual cycle is prolonged to more than six months, or the menstrual period exceeds 1 1 day, it is abnormal, so you should seek the help of a doctor. Real hair begins to replace fine hair, and the growth of hair has to go through four stages: sparse light color, gradual deepening, thickening and curling, and small distribution to dense distribution, in order to reach the hair distribution state of adult women. Typical adult women's hair is distributed in an inverted triangle, and there are also some individual differences. The mammary gland continues to develop, fat and blood vessels increase, the whole breast bulges, and the surrounding brown areola gradually expands. When a girl is 16 ~ 19 years old, about 80% of her breasts are close to those of an adult.