"Why doesn't my child grow taller than a child of the same age?"
"How tall can my child grow, will he be a little short?"
Whenever they attend a class reunion, a group of mothers with children, in addition to discussing their husbands and mothers-in-law, talk about the development of their children the most.
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As a parent, it is natural to hope that their children can grow into tall, and when the height of the child is slightly behind the children of the same age, they will be extremely worried. Let's let the experts answer your questions.
How many years does a child develop?
According to expert analysis, boys grow to 16 years old, girls reach the age of 14, and height development basically stops.
However, the numbers 16 and 14 here are not physiological age, but refer to "bone age"—that is, the age of bones.
Under normal circumstances, the bone age of a person is consistent with or relatively close to the physiological age, but if special circumstances are not checked, such as congenital growth hormone deficiency or precocious puberty, the difference between the physiological age and the bone age will be far away. Therefore, the development period of children will be shorter than that of normal children of the same age.
Therefore, under normal circumstances, in fact, the child's development period is only about ten years.
There are several types of children who may later develop slowly and grow shorter
1. Children with intrauterine growth retardation
There are two common categories:
A: Premature babies. Babies with a gestational age of less than 37 weeks often weigh less than 2500 g at birth and have a head circumference of less than 33 cm.
Because the baby is born early, does not absorb enough placental nutrition, and the organ is not mature, the organ function and survival adaptability will be worse than that of a normal child at term.
B: Full-term sample. Refers to pregnancy of 37 weeks, but less than 48 cm in length, weight less than 2.5 kg, congenital stunted.
The above two types of children, often belong to the category of intrauterine developmental disorders, the physique is inherently weaker than other children, not only weak resistance, easy to get sick and cold, and the digestion and absorption of nutrients will be relatively poor, resulting in slow development of children's height.
In addition, if the child's physique is poor, the spleen and stomach are weak, often three days of illness at both ends, growth hormone deficiency, will also affect the height development.
Recommendation: Raising children with stunting needs to be more careful, especially when it comes to dietary feeding. It is best to allow the child to reach the normal level of development of a child of the same age before the age of 3.
2. Obese children
Standard weight (kg) of children = age * 2 + 8.
If a child weighs more than 10% of his normal weight, he is called "overweight", and more than 20% of the average weight of his peers is called "pediatric obesity".
Now the nutrition of children may be much more supplemented, coupled with unreasonable dietary structure, resulting in obesity in children, far exceeding the weight of normal children of the same age.
Many elders also mistakenly think that children are blessed with fat and do not know that excessive obesity not only poses a threat to physical health, but also affects the normal development of the body.
Mainly because of obese children, the aromatase in fat rises rapidly, resulting in an increase in estrogen secretion, affecting the secretion of growth hormone, bone age development ahead, growth space is compressed, often not high in the future.
Control the diet, try to eat less greasy, high-calorie, high-fat and other foods, especially before and after the child's puberty, adhere to the "control of the mouth, open the legs", a small number of meals a day.
3. A child whose family is short
70% of a child's height is genetically controlled. If the elders in the family are relatively short, then the possibility of having a small baby is relatively large.
Although some of them will break through the genetic genes and grow into large and tall, the chances will be relatively small. Especially some children with family genetic problems, such as short stature, they will be born with less growth hormone normal people, and they will grow slower in the future, and they will be short.
For such children, in the case of excluding disease factors, all we can do is to work hard the day after tomorrow, work hard in diet, exercise and sleep, and finally calm down and face this problem.
Manifestations of abnormal development in children
Expert science popularization, children of different ages, there is a basic development trend, if not enough "minimum long speed", often is abnormal development, the need for parents to intervene as soon as possible.
0 to 1 year old: the fastest development rate, the minimum length of a year can be 25 cm, by the age of 1 year, the height can basically reach 75 cm;
1 to 2 years old: the average annual height can grow 10 to 13 cm, about 2 years old height can reach about 88 cm;
2 to 3 years old: the average annual length is 8 to 10 cm, and the height is almost 98 cm when 3 years old;
3 years old to before puberty: about 5 to 7 cm tall every year, if it is less than 5 cm, it may be stunted;
Puberty (12 to 14 years old): boys are basically 8 to 10 cm long per year, girls are basically 7 to 9 cm per year, if it is less than 6 cm, it may be abnormal development and slow growth.
It is recommended that parents regularly take their children to check the bone age and epiphyseal line, and intervene and control as soon as possible so as not to leave regrets in the future.