Amino acids are as important for nutrition as vitamins & minerals, since they are the basic building blocks of proteins (very important constructive elements of our tissues) and that in some occasions are called dissolved proteins. The type of proteins produced depends on how and with what these amino acids are combined. Each muscles, nerve and tissue is made up of a different combination of amino acids, just as in the way bricks from the structure. Each protein that a person consumes is separated from its basic components by some enzymes and converted into amino acids, which later re-form proteins with different structure and function. The re-conversion to protein is carried out by metabolic process determined by where the vitamins B6, B12 and Niacin intervene. Just as proteins are formed by amino acids, so are enzymes and the majority of hormones formed by them. Therein lays the great importance of nourishing the body with foods and supplements which contain them.Developing children and adolescents require more proteins than an adult, since the adult only needs them for the simple purpose of replenishment. The children need them for the construction of their tissues, muscles, bones etc. Body requires 23 naturally occurring amino acids, of these amino acids -9 amino acids are known as essential since they cannot be synthesized in the body.