The human body is composed of cells, which are composed of water, protein, fat, sugar and minerals, of which water accounts for 85%-90%, protein for 7%- 10%, fat for 1%-2%, and sugar for1. Therefore, apart from most water, protein is the most important substance in human body. In the past, the medical profession thought that amino acids directly constituted protein, but through the study of peptides, it was found that amino acids could not directly constitute protein, but must combine with each other to form peptide chains, and then the peptide chains were folded and curled to form protein. Therefore, peptide is the basic substance that constitutes all cells in human body. All muscle tissues and connective tissues, acids that promote biochemical reactions in the body, hormones that regulate physiology, carriers for transporting oxygen or other ions, antibodies against germs, etc. It's all peptides, such as muscle, hair, stomach acid and hemoglobin. Therefore, we are all peptides, and the renewal, metabolism, growth and repair of cells are inseparable from peptides, which are the form of life. Without peptides, cells have no activity; Without peptides, organs have no vitality; Life is impossible without peptides.
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