1.What is precocious puberty? Precocious puberty refers to the appearance of secondary sexual characteristics before the age of 9 for boys and 8 for girls. It is divided into true precocious puberty and pseudo-precocious puberty. In precocious puberty, girls have breast development and even pubic hair and menstruation; boys have testicles, penis enlargement, pubic hair, etc. In the early stage of precocious puberty, due to the early and large secretion of sex hormones, the growth rate of children with precocious puberty is significantly faster than that of children of the same age and gender at this time, and the height increases significantly, and the bone age is earlier than the actual age. However, due to the stimulation of sex hormones, the epiphysis closes early and growth stops early, resulting in a short stature in adulthood. Therefore, children with precocious puberty should go to a regular hospital as soon as possible for regular treatment. 2.How to detect precocious puberty in children at an early stage? The first symptom of precocious puberty in girls is breast development, the child may not have any complaints of discomfort, only local swelling or tenderness, first unilateral, then bilateral. The enlargement of breasts is mainly due to the enlargement of breast tissue and nucleus formation, while the nipple and areola gradually increase in size, accompanied by pigmentation, etc. The first symptom of true precocious puberty in boys is testicular development, and the patient does not complain of any discomfort at the beginning of the disease, but only shows an increase in the volume of the testicles bilaterally, each greater than 4 ml or the long diameter of the testicles greater than 2.5 cm. Since 60% to 70% of the testicular volume is the seminiferous tubules, their development is the main reason for the change in testicular volume, suggesting that the testosterone-secreting testicular interstitial cells have entered the pubertal development. The first symptom of pseudo-precocious (or peripheral precocious) boys is the enlargement of the penis, with or without the early appearance of pubic hair, but the testicular volume does not increase. 3.What causes precocious puberty in children? (1) Improved nutrition. Nowadays, the living conditions of families have become superior, nutrition has been improved, diseases have been reduced, and the growth and development of children have been accelerated, resulting in early sexual development and increased sexual maturity. (2) Environmental pollution. Nowadays, industrial pollution in society has increased, and food also contains a large amount of pesticide pollution or hormone pollution, and these pollution residues are a causative factor of early sexual maturity in children through the skin or after direct consumption. (3) Hormone-containing food. Nowadays, many vegetables and poultry meat contain a lot of hormones, and some sex hormones can lead to precocious puberty in children when they enter the body indirectly. (4) Blindly taking tonic. “Supplements are one of the culprits that cause precocious puberty in children.” Some parents often give their children to eat to increase appetite, educational and brain health care products, but do not know that these supplements, often contain hormone ingredients, long-term use, can cause children’s blood hormone levels rise, thus leading to precocious puberty. (5) Contraceptives and cosmetics lead to precocious puberty. (6) Sexual information. Nowadays, the society is a highly developed information society, children can not only get a lot of sexually suggestive images from the TV, but also can be exposed to sexual information from the Internet. 4.What is the difference between the development of children with precocious puberty and normal children? The whole development process of children with true precocious puberty is the same as that of normal children. In girls, the earliest symptom is breast enlargement, followed by vulva development, pubic hair and armpit hair, as well as the development of uterus and ovaries, and finally regular menstrual cycle and mature egg formation; in boys, testicles and penis enlarge first, followed by pubic hair and armpit hair, throat knot and become, testicles and penis gradually increase in size and maturity, and finally seminal emission and ejaculation, and mature sperm production. Since the child with true precocious puberty has ovulation and ejaculation, the girl can have pregnancy. On the other hand, because children with true precocious puberty not only have early puberty development, but also tend to have fast progress and short cycle throughout the puberty development period, and their bone age is at least one and a half years earlier than the actual age, so the epiphysis heals earlier, which eventually leads to short adulthood, but the physique is proportional. In short, children with true precocious puberty are fast in growth, then slow in growth, and eventually short in development. In development, the whole puberty period starts early and ends early, and eventually can have normal gonadal activity cycle and pregnancy. 5, will make the child sexually precocious food can be used in the medicine of the great tonic food including cordyceps, ginseng, dried cinnamon, dried lychee, astragalus, sage, etc.. The Chinese medicine pointed out that the more tonic type of medicine, the easier it is to change the normal endocrine environment of the child, resulting in an imbalance in physical and mental development. In addition, some farmed poultry and seafood food, a significant portion of which is fed with feed mixed with fast growth agents, children may lead to precocious puberty after long-term consumption. Hormonal fruits where hormonal fruits, their shape is extra large and abnormal, the appearance of bright color, the flesh taste bland. Almost all anti-seasonal vegetables and fruits are hormone-induced, such as strawberries, grapes, watermelons, tomatoes, etc. in winter, and pears, apples, oranges and peaches, which are listed early in late spring, are almost all anti-seasonal or ripen early with the help of “ripening agents”, and some oversized seedless grapes are mostly the result of estrogen spraying. Deep-fried foods, especially fried chicken, French fries and potato chips, have excessive calories that can be converted into excess fat in children’s bodies, leading to endocrine disruption and premature sexual maturity. Moreover, the cooking oil is repeatedly heated and used, the high temperature makes it oxidative denaturation, which is also one of the causes of “precocious puberty”. Children who patronize foreign fast food more than twice a week and often eat fried puffed food are 2.5 times more likely to have “precocious puberty” than ordinary children. Some oral liquids for children are marketed as “taller and stronger” supplements and oral liquids, a significant portion of which contain hormones. These hormones make children grow taller and stronger than children of the same age when they are five or six years old, and their bone age has reached 8 or 10 years old. And when the child enters the normal development stage, but do not see the growth.