The human body is made up of cells, which are made up of five substances: water, protein, fats, sugars and minerals, of which water accounts for 85%-90%, proteins account for 7%-10%, and fats account for 1%-2%. 2%, sugar 1%-1.5%, minerals 1%-1.5. Therefore, excluding most of the water, protein is the most important substance that makes up the human body. In the past, the medical profession believed that amino acids directly constitute proteins, but after the study of peptides found that amino acids can not directly constitute proteins, but must be combined with each other to form a peptide chain, and then the peptide chain through the folding of the coiled to form proteins. Therefore, peptide is the basic material that constitutes all the cells of the human body, all the human body's muscle tissue and connective tissue, promote the body's biochemical reflection of the acid, regulate the physiological hormones, transport oxygen or other ions of the carrier to resist the germs of the antibody, etc. are peptides, such as muscle, hair, gastric proteins, hemoglobin, and so on, are composed of peptides. So our whole body is peptide, in addition to cell renewal, metabolism, growth, repair can not be separated from the peptide, peptide is the form of life existence, no peptide, the cell has no activity; no peptide, the organ has no vitality; no peptide, the life of the life of the possibility of living.
Reference: