1, common sense of adolescent chest development
1, the process time of adolescent chest development
Developmental process: the first stage (1~9 years old): before puberty, the breast has not yet developed. The second stage (10~ 1 1 year): at the early stage of breast development, the breast germ under the nipple began to grow and showed an obvious dome-shaped bulge. The third stage (12~ 13 years old): the breasts are round and adult-like, but still small. The fourth stage (14~ 15 years old): the breast grows rapidly, and the nipple and areola protrude forward like a ball. If it is still about the same as when 13 years old, it is necessary to find out the reason. The fifth stage (16~ 18 years old): normal adult breasts are formed, and the globules of nipple and areola are integrated with the round shape of breast. The development of breasts is influenced by regional, ethnic and other factors, and the time when female breasts begin to develop is also different. Most female breasts begin to develop at the age of 8- 13, and fully mature at the age of 14- 18. Breast development mostly starts from the left side, and it takes about 3-5 years from the beginning to full maturity.
2. The average time of adolescent girls' chest development.
Before puberty, there is no difference in appearance between boys' and girls' breasts. From the age of 7-8, the girl's body system gradually develops. About 2 years later, under the joint action of ovarian hormone, pituitary hormone and insulin, the breast began to develop. There are also individual differences in the age of breast development, with an average of 10.8- 1 1.4 years old. If the breasts of 16 years old or older are still undeveloped, we should be alert to whether there is sexual retardation or ovarian dysplasia. There are great individual differences in the breast development of female students. Some girls start to develop breasts when they are only 8 or 9 years old, and some girls don't start to develop breasts until they are over 16 years old. Most girls begin to develop breasts before menarche, about 9- 14 years old.
3. Common sense of girl's chest development
Breast development is the first information of adolescent girls. The physiological function of breast is to secrete milk and feed babies, but its aesthetic significance often exceeds its physiological function. Breast is evolved from sweat glands, which are breasts and fat covered by skin. Mammary gland is divided into acinus and mammary duct, which is surrounded by fat and fibrous connective tissue. There is a round nipple, about 4-5 cm in diameter, with sebaceous glands on it, which secrete sebum and moisten the nipple and nipple.
4. Foods that are beneficial to girls' breast development
Papaya, fish, meat, fresh milk and other foods rich in protein (protein food) can strengthen the chest. Seeds and nuts such as soybeans, peanuts, almonds, peach kernels, sesame seeds and millet are all effective breast enhancement foods, so you might as well eat more. Oranges, grapes (grape food), grapefruit, tomatoes and other foods containing vitamin C can prevent breast deformation. Celery, walnuts, red kidney beans and other foods containing vitamin E contribute to breast development. Foods containing vitamin A such as broccoli, cauliflower and sunflower oil (oily food) are beneficial to hormone secretion. Foods containing vitamin B such as beef, milk, beans and pig liver also contribute to hormone synthesis.
Stewed chicken with milk-stewed chicken with milk can play a role in breast enhancement (breast enhancement food). Drink some soup containing traditional Chinese medicine, such as stewed pigeon soup with placenta hominis. Materials include Placenta Hominis, Radix Angelicae Sinensis, Radix Astragali, Fructus Jujubae, and squab. Placenta Hominis is a placental hormone, which is rich in hormones and hormones. Angelica sinensis, red dates and Beiqi tonify qi and blood, while squab has the effect of strengthening the body. You can also drink carp soup made of Polygonatum odoratum, Angelica sinensis, Atractylodes macrocephala, Poria, carp, ginger, etc. Because carp has the effect of strengthening the body, while Atractylodes macrocephala can strengthen the spleen and stomach, and the combination of the two has the effect of strengthening the chest.
5. Causes of adolescent chest dysplasia
Insufficient secretion of female sex hormones directly affects the growth and development of mammary ducts and terminal branches, which can lead to the dysplasia of lobules and acinus of small mammary glands, thus affecting the development of breast. Adolescent dysplasia is caused by various reasons, which affects and hinders the normal development of breasts. Adolescent endocrine disorders: the lack of adolescent sexual knowledge and girls' sense of shame will lead to psychological disorders and endocrine disorders, affecting the normal development of breasts.
Chest girding, because of psychological barriers, or wearing tight bras, is easy to cause breast dysplasia. Lack of physical exercise. Due to the long-term lack of moderate physical exercise, the pectoral muscles are underdeveloped. There are many genetic factors leading to female students' chest dysplasia. Therefore, girls must supplement nutrition in adolescence, and never go on a diet to lose weight in adolescence. These factors have a great influence on chest development. Therefore, for everyone's health, we must fully supplement nutrition and need to increase some moderate exercise.
2, the method of female breast enhancement
1, diet breast enhancement
The method of dietary breast enhancement is very simple. As long as some foods rich in protein, vitamins, zinc and other nutrients are added to the daily diet, better breast enhancement effect can be achieved.
2, exercise breast enhancement
The main methods of exercise breast enhancement are push-ups, lifting dumbbells, single parallel bars and chest exercises. These methods of exercise breast enhancement can effectively exercise the muscles of the chest, thus achieving the purpose of promoting breast development.
3, massage breast enhancement
Massage breast enhancement is also a popular breast enhancement method. If combined with some essential oils with breast enhancement effect, girls' breasts can develop more roundly and fully.
4, drug breast enhancement
The causes of breast growth retardation in some girls are mostly related to low ovarian function. For this group of people, it is generally recommended to use related drugs to breast enhancement, and some hormone drugs are common.