In the eyes of many patients, talking about hormones makes them think of side effects such as body fat, osteoporosis, liver and kidney toxicity, etc. Growth hormone also has the word “hormone”, so does it also have such side effects? What exactly is it? What effect does it have on the human body? First of all, we need to look at what is a hormone? Hormones play an important role in regulating the metabolism, growth, development, reproduction, sex, libido and sexual activity of the body. Hormones are broadly divided into four categories according to their chemical structure: the first category is steroids, such as adrenocorticosteroids (cortisol, aldosterone, etc.) and sex hormones (estrogen, progesterone, androgen, etc.). The second group is amino acid derivatives, such as thyroxine, adrenal medullary hormone, pineal hormone, etc. The third group of hormones is structured as peptides and proteins, such as hypothalamic hormones, pituitary hormones, gastrointestinal hormones, insulin, etc. The fourth category is fatty acid derivatives, such as prostaglandins. The hormones that ordinary patients think bring a lot of side effects are actually only one type of hormone ——– “glucocorticoids”, growth hormone is a peptide hormone secreted by the hypothalamus-pituitary gland of the brain that can promote body growth. For the liver and other tissues to stimulate the production of insulin-like growth factor (IGF-1) to perform its physiological functions, promote bone growth, protein synthesis, accelerated fat, muscle tissue increase, while people usually heard of the “hormone” is glucocorticoids, long-term use will make people gain weight, bone density decreased. However, growth hormone is very different from glucocorticoids in terms of physiological effects, secretion and regulation, so growth hormone does not bring the side effects of glucocorticoids to patients.