Normal birth weight for infants

The baby's growth and development should have different levels for different ages of the baby. Mastering the most effective sleep time can not only improve the sleep quality of our baby, but also promote the normal, healthy and strong growth of the baby. Therefore, it is very important to master the baby's sleep time. This is also beneficial to our baby's development. Baby development involves many aspects of the problem. What is the normal weight of a baby at birth? Let us take a look at the relevant situation below.

About 4-5 kg.

standard:

1. Height The occurrence of a height growth spurt is a sign that boys and girls are entering puberty. The height of adolescent boys can increase by 7-9cm per year, up to 10-12cm, and an average increase of 28cm during the entire puberty; the height of adolescent girls can increase by 5-7cm per year, up to 9-10cm, and an average increase of 25cm during the entire puberty. Because boys begin puberty later than girls, their bones stop growing later. In addition, boys' growth spurt is larger and lasts longer, so by adulthood the average height of men is generally about 10 cm taller than that of women.

2. Weight is easily affected by environmental factors such as nutrition and disease, and its stability is less stable than height. It mainly reflects the changes in the quantity of bones, muscles, adipose tissue and internal organs, so it can continue to grow even after puberty. Body weight refers to the total weight of the body, including bones, muscles, fat, internal organs, etc. As girls age, their body fat continues to increase, with a peak in fat accumulation during puberty, when they mature, the amount is twice that of boys. As boys age, their muscles continue to develop, reaching their peak at age 30, and when mature, they are 1.5 times that of girls.

3. Lean body mass and body fat Lean body mass (lean body mass), also known as fat-free body mass, includes the bones, muscles, various internal organs, nerves, blood vessels, etc. of the whole body, also known as metabolically active tissue. Body fat refers to all the fat tissue in the body, but most of it is stored in the subcutaneous tissue, also known as metabolically inactive tissue. The sum of the two is the body's weight. It is a normal physiological phenomenon for girls to have a high body fat content, and there is no need for girls to worry too much about suffering from "obesity". Some girls aged 16-17 do not understand these physiological changes and lack the necessary health knowledge. They mistakenly believe that the thinner the better and are afraid of getting fat so they try to restrict their food intake, which leads to physiological dysfunction caused by morbid psychology, namely anorexia nervosa, which seriously affects the normal development of children and adolescents and should attract the attention of relevant departments. Due to the difference in lean body mass and body fat content between boys and girls, boys have a sturdy body shape with well-developed muscles, broader shoulders and larger chest circumference. Girls, on the other hand, develop a fuller body shape with a high body fat content, a wider pelvis, and narrower shoulders.

The above content introduces us to the relevant issues about the normal birth weight of infants. Through these contents, we should have a deeper understanding of the baby's growth and development. Each of us may be a father or mother of a child. Mastering some knowledge in this area will be more conducive to the growth of the child. I hope the above content is helpful to everyone.