There is a wide variation in the age at which girls’ breasts develop. The age of development varies from girl to girl with different physiques, and most girls are around 9~12 years old.
The age of girls’ breast development should be around 9~12 years old, and no later than 14 years old. Girls will enter puberty, which is the state of development, at the age of 9~12 years old. Gradually appear secondary sexual characteristics, such as breast development, menstruation, height growth, etc., this age the ovary secretes more estrogen.
If a girl does not develop after the age of 14, it is considered to be delayed sexual development, and if breast development occurs before the age of 8, it is considered to be precocious puberty, which needs to go to the hospital for differential diagnosis and appropriate intervention.
In the developmental stage need to give the body more nutrition, developmental period can be appropriate exercise, avoid strenuous exercise, maintain enough sleep, nutrition comprehensive and balanced, maintain a happy mood.