How old a child is is a suitable formula to predict the height development of a child.

Height is an important sign of a person's appearance, especially for developing children. Parents are particularly concerned, afraid that he will be short in height in the future, and even hope that he can be "shine on you is better than blue" and grow taller than his parents.

Is my child normal in height?

Generally speaking, all countries in the world have their own height standards, which are different; In China, the national medical service system of the Ministry of Health and Welfare and the percentage bitmap of the height growth curve of men and women published by the Taiwan Province Pediatric Medical Association are the main reference values. On the growth curve, * * * is divided into five percentile curves from low to high, such as No.3, 15, 50, 85 and 97. When a child's growth curve is lower than the 3rd percentile curve, it means that among the100th children of the same age and sex, he belongs to the shortest third place, and we define him as short stature.

Secondly, every child's height and weight should increase continuously, so if he is in the 50th percentile from the beginning, if he falls in the 15 or lower percentile for unknown reasons after half a year or one year's follow-up, that is, he deviates from the original growth curve, he should pay special attention to whether there is growth retardation.

It is best to consult a doctor if it is less than 4 cm after 4 years old.

Of course, the height growth rate of different children is different. Usually, the normal full-term newborn is about 49 to 50 cm in length, 25 cm in the first year after birth, 65,438+065,438+0 cm in the second year, 7 cm per year between 2 and 4 years old, and 4 cm per year on average from 4 years old to puberty. If the child grows at a normal speed, it is possible. Therefore, if it is found that the child's growth deviates from the growth curve, or the average growth of the child is less than 4 cm after the age of 4, it may indicate that the child's growth is problematic. It is best to ask a pediatric endocrinologist for further evaluation.

Parents will wonder how tall their children will grow in the future. Foreign countries have developed a set of methods to calculate the target height of children: the sum of the height of boys' parents, first add 13 cm, and then divide by 2. A girl is the sum of her parents' height minus 13cm and then divided by 2. Where 13 cm is the average height difference between men and women.

However, this is not the only criterion. Although the height of parents will affect the future height of children to a certain extent, in fact, the acquired environmental impact is not small, such as sleep quality, nutrition, exercise and other factors, or the rapid progress of adolescence will cause the error of actual height in the future.

What's the matter with children not growing tall?

The height of a child is basically closely related to heredity. If both parents are not tall, there is a great chance that the child will not grow tall. Another situation is that if parents are very young and start to grow up after puberty, this is called physical retardation. This is a normal variation, which means that such children will puberty later and start to grow taller significantly later, just like their parents. This situation can wait.

However, height may also be affected by the following factors, such as malnutrition and some diseases, such as congenital heart disease, chronic liver disease, gastrointestinal diseases, chronic kidney disease, immune or nervous system diseases, etc., which will affect the future height of children. These children are all underweight.

In addition, if there are endocrine diseases such as hypothyroidism, growth hormone deficiency, Cushing's disease (excessive adrenaline secretion) and rickets. It will also lead to the growth of children; But these children's weight is usually in the normal range, but their height is particularly short.

The other is caused by genetic diseases, such as Turner's disease, chubby Willie's disease, SHOX gene dysfunction, Russell Seaver's disease, etc., which are common in women. Of course, if there are problems with the growth and development of bones, such as children with achondroplasia or mucopolysaccharidosis, the proportion of trunk will be obviously different from that of ordinary children, which will affect the height development.

However, according to clinical statistics, the growth rate caused by endocrine and genetic diseases is very low, of which 80% to 90% are physical growth retardation. Therefore, parents need not worry too much. If there is no special disease, they usually just start to grow taller.

The growth plate will grow organically before it is closed.

Adolescence is the second growth height besides infancy. Generally speaking, women begin to enter puberty at the age of 8 to 13, and men at the age of 9 to 14. During this period, their height will increase significantly, and when women have menstrual cramps, their growth rate will gradually slow down, but it will continue to grow for about a year or two. Boys generally start sprinting late, probably in the middle of adolescence.

Whether the growth board is closed or not is the key to continue to grow taller. Growth plate is hyaline cartilage tissue located at the end of bone. When the pituitary gland secretes growth hormone, it will proliferate bones and increase height. Once the growth plate is closed, it won't grow taller. At present, the commonly used detection method to evaluate the maturity of bones is bone age research, that is, taking X-rays of the left palm and wrist, and estimating the current age of bones from the conditions of bone state and healing degree of growth plates.

Usually females close at 16 years old, and males close at 18 years old. As long as the growth plate is closed, it will grow organically. However, if girls develop before the age of 8, or boys develop before the age of 9, puberty will start earlier, which may make the growth plate close earlier and not grow tall. Therefore, if you find that your child is short, you need to grasp the golden treatment period.

Can growth hormone help you grow taller?

There are indeed drugs in medicine that can help children grow up. If the doctor diagnosed growth hormone deficiency, giving growth hormone can help children grow up. For those who develop early, there are also drugs that can delay puberty; As for chronic diseases, endocrine diseases, etc. Children can also grow up normally through proper treatment.

Parents often ask, "can you give growth hormone to make your child grow taller?" At present, under the national medical insurance payment standard, it can be applied to people with growth hormone deficiency, Turner syndrome, chubby Willie's disease and SHOX gene deletion. If used in sick children with growth hormone deficiency, growth hormone therapy can really improve the growth rate of children. Children with growth hormone deficiency can grow more than 3 cm after treatment than the year before treatment. Even for patients with Turner's disease, according to our past research, after four years of growth hormone treatment, the height of the treatment group is 6 cm higher than that of the untreated group. But also beneficial to patients with chubby Willis disease, which can reduce fat distribution and improve muscle mass.

It is not recommended to give growth hormone to normal children.

Empirical medical research found that for children with idiopathic short stature (that is, short stature caused by non-growth hormone deficiency or short parents), the height difference between the treatment group and the non-treatment group was about 4 cm after receiving growth hormone treatment for about 5.4 years. After accounting, for example, a child weighing 25 kg will spend more than 200,000 yuan on average. Whether it is worthwhile or not remains to be evaluated by parents themselves.

Because the treatment effect of growth hormone drugs for normal children is not good, Linyi does not recommend that normal children be beaten. In addition, growth hormone is not without its shortcomings, because it will * * the growth of cells in the body, so if there are bad cells in the body, they will grow at the same time, which will increase the risk of cancer; On the other hand, growth hormone will affect blood glucose metabolism and cause insulin resistance. In addition, in the initial stage of treatment, a few users will have benign intracranial pressure increase, and the femoral head growth plate may slip off during treatment. If they have scoliosis, the symptoms will be more serious; Patients with chubby Willie's disease have doubts about sleep apnea when they are treated with growth hormone.

Nutrition, exercise and sleep can help children become excellent.

Therefore, if there is no special disease, it is necessary to help children grow taller, and it is not necessary to spend a lot of money on drugs. As long as they have enough sleep, balanced nutrition and proper exercise, they can naturally secrete growth hormone normally. In addition, overweight can also make children's puberty develop ahead of time or the growth plate close ahead of time, so it is also very important to avoid children's obesity.

People in Taiwan Province Province are the second tallest in Asia.

Scientists in Imperial College London, London, studied the world's largest height, and investigated the changes from 19 14 to 20 14. It is found that the average height of men in Taiwan Province Province has been promoted from122nd in the world to 57th, and the height of women has been18th in 200 countries.

Q: Does calcium supplementation contribute to high altitude?

A, the main function of calcium is to strengthen bones. It is suggested that calcium should be taken from natural foods such as dairy products, kale, amaranth, dried fish, shrimp skin and sesame. If there is enough calcium in the diet, there is no need to supplement calcium powder or calcium tablets. The recommended daily intake limit of calcium for children aged 65,438+0 ~ 65,438+08 is 2500mg, and excessive intake may cause hypercalcemia or constipation. In addition to calcium intake, we should also pay attention to the intake of vitamin D, because calcium needs vitamin D to be absorbed. The source of vitamin D can come from foods such as liver, egg yolk and cod liver oil, or from skin sunlight. Growing taller requires a balanced nutrition, not just one nutrient, but all kinds of food.

Can playing basketball make you grow taller?

A, any exercise can affect the height of the child, but don't overdo it. The World Health Organization recommends accumulating at least one hour of moderate-intensity physical activity every day, such as cycling, walking and healthy exercise. And strenuous exercise at least three times a week, that is, aerobic exercise that is slightly breathless, such as running, playing ball and skipping rope. Foreign studies have pointed out that after sweating and strenuous exercise for about 10 minutes, growth hormone will rise, but there must be rest time. If it is too dense, it will weaken the growth hormone response.