74.什么是生长激素？What is growth hormone?

There is a popular saying that "children don't grow unless they sleep", which actually has some scientific truth to it. Why do you say this? Let's start by understanding one word: growth hormone.
There is a part of the human brain called the pituitary gland, which has a huge role to play.
In addition to secreting sex hormones, adrenocorticotropic hormones and other hormones needed by the body, the pituitary gland also secretes growth hormone.
Growth hormone is one of the hormones that are essential for human growth and development. It promotes the synthesis of proteins in the body and helps children's bones to develop, thus making them taller.
The pituitary gland is so overloaded that it does not secrete growth hormone 24 hours a day, but mainly at night, and the more it is secreted, the more it helps the child to grow.
This is why it is so important for children to go to bed on time at night. We must not let our children go to bed late, as this can also cause problems such as a reduced immune system and reduced food intake.
译文：
在民间流传有这样一句俗语：“孩子不睡觉不长个子”，这句话其实有一定的科学道理。为什么这样说呢？我们先来了解一个词语：生长激素。
人的大脑里有一个部位叫脑垂体，脑垂体的作用非常巨大。
一天的任务，除了要分泌性激素、促肾上腺皮质激素等人体所需的多种激素之外，还要分泌一种“生长激素”。
生长激素是人体生长发育必不可缺的激素之一，可以促进机体蛋白质的合成，有助于孩子的骨骼发育，从而使身体增高。
脑垂体的“工作量”实在太大了，因此它并不是24小时都在分泌生长激素，主要在晚上分泌，分泌得越多，就越有助于生长。
所以说孩子晚上按时睡觉非常重要，我们一定不要让我们的孩子晚睡觉，晚睡觉还能造成免疫力下降，饭量减少等诸多问题。