Hormones and synthetic substitutes

Hormone is an important substance in our life, and it is a chemical information substance synthesized by highly differentiated endocrine cells and secreted directly into the blood. it affects the physiological activities of the human body by regulating the metabolic activities of various tissues and cells. it plays an important role in regulating body metabolism, growth, development, reproduction, sex and so on. There are many kinds of hormones but the quantity is very small. They are neither the energy source of the body nor the structural substances that make up the body, but through the transmission of information, they play an important role in coordinating physiological processes such as metabolism, growth and development. According to its chemical nature, it can be divided into nitrogen-containing protein hormones and steroid hormones derived from amino acids, peptides and proteins. According to physiological function, it can be divided into insulin and parathyroid hormone, which regulate body metabolism and maintain relatively stable internal environment, promote cell proliferation and differentiation, control body growth and development and reproductive function, and affect its aging process. Growth hormone, which closely cooperates with the nervous system and enhances the adaptation of the body to the environment.