Growth hormone and height: Growth hormone is the most important hormone that promotes our growth and is secreted by the pituitary gland. The growth hormone secreted by the pituitary gland travels with the bloodstream to the liver, where it stimulates the secretion of insulin-like growth factors. When the epiphyseal cartilage at the ends of the bones receives insulin-like growth factor, it starts to divide and produce chondrocytes, which are continuously calcified and deposited to form the growth of bones. Factors affecting the secretion of growth hormone: Less sleep will affect the secretion of growth hormone: normal growth hormone is secreted at night while sleeping, if the sleep time is not long enough, the secretion of growth hormone will be reduced, which will affect height. Children should get more than 8 hours of sleep. Eating less at night is good for growth: growth hormone is secreted at night, and one way to promote growth hormone secretion is to eat less at night. This is because growth hormone is affected by many factors, of which blood sugar is a very important factor. If blood sugar is too high, the secretion of growth hormone is resisted. There is an important clinical test to check whether there is enough growth hormone – the insulin hypoglycemia test. Breakfast and lunch are good for growth: Children must have a good breakfast and lunch, and try to have more protein because the amino acids in protein can promote the secretion of growth hormone. Exercise: A moderate amount of exercise can promote the secretion of growth hormone. Emotion: Depressed emotion will reduce the secretion of growth hormone and affect the growth of children. Pituitary gland and growth hormone: Pituitary gland is most prone to growth hormone tumor: If there is a tumor in the pituitary gland, the size of the pituitary gland will increase significantly, and the secretion of growth hormone will also increase, and it will keep growing until the bones are closed, and the size of the growing child will be abnormally high. If you suspect that you have a tumor in the pituitary gland, you need to have an MRI to read it. On one hand, you can see the development of the pituitary gland, and on the other hand, you can observe whether there is a tumor near the pituitary gland. If there is a tumor near the pituitary gland, it may lead to two extremes: one is a surprisingly tall person, and the other is dwarfism due to compression of the pituitary gland. How much height per year is considered normal for children: Children normally grow 5-6 cm per year (before puberty) and need to pay attention when it is lower than 5 cm or higher than 6 cm.