Both parents are very tall, but why the child does not have the ideal height? And some parents are short in stature, but their children can reach a good height? Is it genetics, environment, nutrition, sleep and exercise that play a decisive role? “In fact, in addition to the above factors, there are at least three high and three short factors that affect human height, and from the moment of fertilization, six factors randomly cooperate, and it is unknown whether the fetus can get several high genes or short genes”, analyzed Professor Shen Yongnian, chief physician of Children’s Medical Center affiliated with Shanghai Jiaotong University School of Medicine, as a way to determine the child’s future The approximate height of the child is determined by this. This also explains the difference in height between children born to the same parents. For children whose height is in doubt, doctors recommend taking a bone age test once every six months to observe the child’s growth rate, and if the child’s height catches up with the standard level afterwards, the number of bone age tests can be reduced. Shen Yongnian said that some parents think that more supplements or more exercise will help height, but in fact the amino acids in the supplements can be replenished and broken down through protein (such as milk and eggs) intake to stimulate the secretion of growth hormone. In general, if a child has a good appetite and consumes enough protein, there is no need to take supplements. However, if there are symptoms of anorexia and prolonged diarrhea, consider taking supplements in moderation. In terms of exercise, the more you exercise, the faster you grow, but excessive exercise can cause dwarfism. I learned from Professor He Ying, chief physician of the Department of Pediatrics of the Changzheng Hospital of the Second Military Medical University, that the growth of a child from birth to adolescence follows the law of fast-slow-fast-slow, that is, the fastest growth during infancy, slow growth after the age of 4-5, fast again during development, and growth falls back after adolescence. If the child is not properly nurtured or chronically ill, it will affect the child’s lifelong height. The hormones in the human body are closely related to growth and development. Growth hormone, thyroxine, sex hormone and insulin share different roles, for example, thyroxine promotes metabolism and growth, once lacking, the stature will be short and intelligence will also be impaired; for example, lack of growth hormone or complete lack of growth hormone will lead to short stature or dwarfism, too much growth hormone will produce Gigantism. This shows that any hormone needs to be balanced. If growth hormone is to be used, three indications must be met: first, a height of less than 2 standard deviations compared to peers of the same sex (in the bottom three of the class in size); second, a significantly slower growth rate of less than 5 cm per year; and finally, a substandard level of growth hormone in the blood, such as a low insulin growth factor. After 3-6 months of medication, efficacy observation needs to be done to evaluate whether the medication is helping the child’s height.