Adult lifetime height (cm) for boys = (father’s height + mother’s height 13)/2±7 (cm) Adult lifetime height (cm) for girls = (father’s height + mother’s height – 13)/2±7 (cm) Here we need to remind you that: (1) the calculation formula is statistically processed and only about 95% of normal people are within this range, not necessarily everyone can reach it; (2) the calculated (2) The ±5.29cm after the calculated median value is the statistical standard deviation, normal people may be above or below the median value, but it does not mean that perfectly normal people can add 5.29cm to their genetic height through balanced nutrition, good sleep and exercise; (3) Genetic height is only the range of adult height that perfectly normal people should reach, it does not mean that all children can reach it. Do not disregard your child’s growth and development because the calculated genetic height is still acceptable. Short stature is also a disease, and from time to time, children of parents who are both tall will be short, because just because the parents are tall does not mean that the child will never have a disease such as growth hormone deficiency; (4) Do not be too pessimistic if the parents are short. Familial dwarfism, which is currently classified as idiopathic dwarfism, can be treated appropriately in most cases to improve lifetime height to some extent, as long as the epiphysis is not closed. At the same time, since the parents have not undergone any examination and treatment for dwarfism in the past, it does not mean that there are definitely no diseases affecting height in the family, some diseases can now be examined and effectively treated, and if the child has the same disease, it is entirely possible to achieve a more desirable lifetime height through examination and treatment. (5) As the standard of living has improved, sex hormones in food are often inevitable, and sex hormones in health care products are even more prevalent. You can’t ignore your child’s development because he or she is still tall or high, because when he or she is precocious, his or her height is often higher than that of his or her peers, but he or she also stops growing early and may be shorter in the future. Once puberty is over, the growth will stop and no treatment is possible. (6) The most accurate way to predict adult height is through accurate assessment of bone age. Because only parental height is considered when calculating genetic height, the child’s current height and bone age at that time are not taken into account. If the bone age is greater than age, there will be less room for growth later in life and the adult height will be lower, while if the bone age is less than age, there will be more room for growth later in life and the adult height may be higher. Since bone age is the physiological age of a person, it should match the actual age now, and if the difference is too large, it is often due to disease and requires timely examination and treatment. (7) First of all, in Japan, and now also in Taiwan and some Western European countries, free bone age films are taken every two years for all children and adolescents during their growth period, so that abnormalities in growth and development can be detected in time for timely treatment, which is worthy of reference for the Chinese.