Essential amino acids

Essential amino acids are amino acids that cannot be synthesized by the human body or the rate of synthesis cannot meet human needs, and must be taken from food. It is essential for the human body (or other vertebrates), and there is no synthetic amino acid in the body. The amino acids that must be supplemented from food are called essential amino acids. There are eight essential amino acids for adults: lysine, tryptophan, phenylalanine, methionine, threonine, isoleucine, leucine, and valine. If these amino acids are often absent from the diet, they can affect health. It plays an important role in the growth of babies. For infants, histidine is also an essential amino acid.