The growth of human body is the result of the division and proliferation of bone cells, and the growth of bones needs to absorb as many as 3 1 nutrient. Crops need fertilizer to grow tall, animals need feed to grow fast, and adequate nutrition can fully grow, grow fast and grow tall. Humans often get nutrition by eating vegetables and fruits, and these foods need less nutrition to grow taller, so it takes a long 20 years for the human body to mature.
Extended data
The most important factor that determines a child's height is heredity.
If the parents are not tall, the height of the child is generally not particularly prominent.
However, there are exceptions. Mr. Yang, who works in a construction company, is only 160cm tall and his wife is not tall. However, both sons broke the genetic limit. One is over 180cm in height and the other is over 170cm in height. Friends all joked that this is the masterpiece of genetic mutation of Yang and his wife.
In this special case, pediatrician Li Junxian pointed out that a person's height is not determined by a single specific gene. Most people have both high genes and short genes. Whether it is tall or short depends mainly on which one is expressed by genes. Therefore, in a family, sometimes one child is tall and the other child is short, Li Junxian explained.
In addition to genes, other related factors can not be ignored. "Suppose your genes decide that you can grow to 160 cm, but your malnutrition and lack of exercise probably won't make you grow to this height," said Li Junxian, who thinks that the efforts the day after tomorrow are equally important.
Biologists and medical experts have found that a person's growth rate is not only related to race, heredity, endocrine and living habits, but also closely related to nutritional status, geographical climate and physical exercise. After entering May-10, spring returns to the earth, everything is budding, singing and dancing, and it is full of vitality. At this time, the functions of various organs and cells in the human body are very active, the secretion of growth hormone in the body increases, and the growth and development are accelerated. Especially after a long winter, people like to go outdoors, so the growth rate has accelerated more obviously.