What are the first sex characteristics? The differences in the reproductive organs between men and women are called “primary sexual characteristics”. Other differences between males and females in terms of gender are called “secondary sexual characteristics”, which are caused by the differences in sex hormones secreted by males and females. The main external characteristics of sexual development are beard, throat knot and voice change in males, and breast bulge, wider pelvis and hips, and higher voice tone in females. The concept of precocious puberty: If secondary sexual characteristics appear before the age of 8 years for girls and 9 years for boys, or the first menstruation of girls before the age of 10 years, it can be diagnosed as precocious puberty. Usually girls start to develop breasts as a sign around the age of 10; boys enter puberty around the age of 12, initially with the enlargement of testicles as a sign. The hazards of precocious puberty: Precocious puberty can be very harmful to children, with early maturation shortening the epiphyseal growth period and premature closure of the epiphysis, which can affect the child’s final height. In addition, although the child’s sexual development begins to mature, but the age, psychological maturity are not consistent with this, it is easy to cause children’s psychological disorders, affecting the growth of the child’s personality! The classification of precocious puberty: Precocious puberty can be divided into three categories according to the pathogenesis: central precocious puberty (true), peripheral precocious puberty (pseudo) and partial precocious puberty. 1. Central precocious puberty (true), also known as GnRH-dependent precocious puberty, is due to the early activation of the function of the hypothalamus-pituitary-gonadal axis in humans, resulting in gonadal development and function The development and function of the gonads is caused by the early activation of the hypothalamus-pituitary-gonadal axis, which leads to the development and function of the gonads; the maturation of the gonads is completely consistent with the normal mechanism of pubertal development and maturation, and the precocious puberty has fertility; 2. It is not caused by the activation of hypothalamic-pituitary-gonadal axis; 3. Partial precocious puberty refers to the precocious puberty caused by the activation of non-central neuroendocrine mechanism, in which the body appears too many hormones in advance, causing early development of simple breast and pubic hair in children, but not accompanied by the development of other sex characteristics and growth acceleration. The prevention of precocious puberty: Now the onset of precocious puberty in children has a growing trend year by year, and there are many reasons that lead to the increase of precocious puberty in children, parents can pay attention to the following points in life, if the child has developmental signs, you should go to the hospital in time to find a specialist to assess the level of development and understand the condition, early intervention and treatment! 1, pay attention to diet to avoid the intake of food or drugs containing sex hormones eat less or do not eat anti-seasonal fruits and vegetables, do not eat KFC and other foreign fast food and school roadside food stalls, less snacks. Do not eat artificially fed seafood (snapper, eels, etc.), do not eat pollen, honey, royal jelly, etc., and do not give children to eat some such as: Cordyceps, red dates, Astragalus, party ginseng, American ginseng, propolis, snow clam cream, bird’s nest and other tonic products and all kinds of health food! 2, reduce the impact of psychosocial factors Currently, in various communication media such as television, movies, newspapers, magazines and other content, and sex-related content increased, children involuntarily received the influence of subtle. Since there is a rich neural connection between the cerebral cortex and the hypothalamus, the start of the hypothalamic-pituitary-gonadal axis may be caused to advance accordingly. So it is advisable to watch less idol drama and other television, and not often exposed to television or computer light. 3, exclude the influence of pathological factors Some central precocious sexual development is due to viral encephalitis, meningitis or due to organic lesions of the central nervous system such as tumors in the hypothalamus, pituitary gland and pineal gland. This is far more common in boys than in girls, so it is important to be cautious about precocious puberty in boys and to have a detailed examination to clarify the presence of central nervous system disease.