Glycine is not harmful to the human body. First of all, glycine is widely found in connective tissue, muscle tissue, epidermal tissue and other organs and has positive effects on the human digestive system, metabolic and circulatory system, nervous system and other systems. Glycine has a positive effect on the human digestive system, accelerating the breakdown and transformation of glycogen, fat, protein and other nutrients, providing the body with a source of energy and essential nutrients. Glycine has a positive effect on the body’s metabolism and promotes the elimination of toxins, thereby slowing down the aging of various organs and tissues and enhancing the ability of the immune system. According to recent studies, glycine plays a regulatory role in the production of human growth hormone, and helps to stabilize mental and emotional well-being and enhance memory.