What are the factors that affect a girl's height?

In life, we often see some people with very bad height, very short, and some are less than 1.5 meters tall. Such people will face many difficulties in society, especially many girls. If they don't pay attention, their height will not grow taller, and people who are not tall will not look beautiful. Therefore, many people will try every means to make themselves taller. There are many reasons why girls are not tall, so what are the specific factors?

(1) Height is related to the early or late stage of sexual maturity

The sooner or later of mature age will affect the height growth rapidly. Generally speaking, people who experience rapid growth earlier will reach the end point faster; those who experience it later will also reach the end point later. While girls with precocious puberty are no longer growing taller, girls with late puberty are still growing taller. Therefore, the rate of late sexual maturity in young girls is higher. The fastest growth period in height is during early adolescence. A girl's height increase can reach 7 to 8 cm in the year before her first menstruation; while a boy's peak height growth is in the first year of puberty, around 13 to 14 years old, when his height increase can reach 10 to 12 cm.

(2) Height is related to nutrition

In a sense, height is "built up" of nutrients (especially protein). There are 50,000 to 100,000 substances that make up the proteins in the human body, and the eight essential amino acids that make up these proteins must be supplied by food. If food can provide sufficient amounts of the eight essential amino acids, it can accelerate protein synthesis and help the growth and development of tissues and organs throughout the body, especially the growth and development of bones and skeletal cartilage. Experiments on preschool children showed that the experimental group that added 0.5 grams of lysine to each meal of bread was significantly taller and heavier than other children. Japan conducted an experiment on 6 pairs of twin babies, dividing them into two groups. The first group was given normal nutrition, while the second group had lysine added to their food. After 1,300 days, the babies in the second group were an average of 1.7 cm taller and 1 kg heavier than the babies in the first group. It can be seen that comprehensive and reasonable nutrition is a factor that affects height, and it is also a necessary condition for remedying height. The metabolism of bones, especially the lower limbs and spine, is most active during sexual development, which requires a rich supply of nutrients. High-protein in the diet, especially animal protein and inorganic salt foods such as calcium, phosphorus, and vitamins, such as lean meat, eggs, milk, fish, and various B and E vitamins that promote metabolism, nutrients contained in beans, whole grains, fresh fruits and vegetables, all contribute to the full development of bones, that is, the growth, thickening, widening of bones and the thickening of the bone cortex.

(3) Height is related to sleep

When biologists studied the secretion patterns of endocrine glands, they found that for children and teenagers, the better they sleep, the taller they will grow. The growth of height depends on the continuous growth of the epiphysis, and the growth of the epiphysis is controlled by the endocrine glands. The endocrine hormones that control height mainly include growth hormone, luteinizing hormone and sex hormones secreted by the pituitary gland, among which growth hormone has the most significant effect. The secretion of growth hormone has its obvious regularity, that is, it is secreted less during the day and more at night when sleeping. Researchers have found that after children fall into deep sleep for one hour, the secretion of growth hormone is 5 to 7 times higher than that during the day, and the secretion of sex hormones and luteinizing hormone is also very active during deep sleep. Obviously, this is very beneficial to children's height growth. Adolescence is the period when growth hormone and androgen secretion are most active. The main function of growth hormone is to grow the bones of the limbs; while androgen makes the bones thicker and stronger. The secretion of these two hormones is particularly strong during sleep, so teenagers must ensure adequate sleep, at least 8 hours a night.

(4) Height is related to genetics

According to research, 75% of a person's final height is determined by genetic factors. That is to say, in general, if parents are tall, their children will also be tall; if parents are short, their children will also be short. However, parents' height is not the only factor affecting their children's height. The impact of external factors, namely environmental conditions, on height cannot be ignored. External factors mainly refer to nutrition, living habits, physical exercise, etc.

(5) Height is related to physical exercise

According to a survey, one year of physical exercise can make boys 1 to 2 centimeters taller than their peers who do not exercise, and girls 2 to 3 centimeters taller. Primary school students who exercise regularly are about 5 cm taller than those who do not exercise. Physical exercise can help you grow taller because, firstly, it can promote the secretion of growth hormone; secondly, it strengthens the blood supply to bone cells, which is beneficial to improving the proliferation capacity of epiphyseal cartilage; thirdly, it has a good stimulating effect on the proliferation of epiphyseal cartilage. According to research, the secretion of growth hormone increases significantly after exercise. At the same time, exercise will also exercise muscles and bones, making them stronger. Therefore, researchers at home and abroad unanimously agree that exercise helps to grow taller. Experts suggest that the following exercises are particularly helpful for children to grow taller. A. Reach high exercises; B. Climbing poles or rope ladders; C. Upper body forward stretches; D. Cross stretches; E. Rope skipping, rubber band skipping, and shuttlecock kicking; F. Single-pole hanging; G. Swimming. These exercises will increase the flexibility of joints and ligaments and help height development. Weight training such as weightlifting, barbell, shot put, discus, etc. should not be used as regular training programs for teenagers under the age of 18. Even after puberty, it is not suitable to engage in such sports so as not to affect the development of height.

(6)Height is related to mental factors.

Studies have found that children who have suffered severe mental trauma have slowed growth and development, or even stagnated. This is because negative emotions can affect the functions of the brain and endocrine system, which in mild cases can affect physical development and in severe cases can lead to various diseases. Therefore, sadness and depression will not only make children and adolescents susceptible to various diseases, but also affect their growth and development, and even cause the phenomenon of "premature aging".

The above are the various factors that cause girls to not grow taller. We must improve these factors in our lives before we can grow taller. The child’s height problem is also closely related to diet and nutrition. Therefore, we must avoid malnutrition in children and give them more nutritious foods. At the same time, we must also avoid children’s study pressure. It is best to relax and study.