A large majority of the human body is made up of water. Second to water is protein. All living things on this planet, from large to microscopic, have protein. Protein is made from chains of amino acids called peptide bonds. These amino acids are considered the “building blocks” that make up protein. Protein contains 16% nitrogen which chemically makes amino acids different than sugars and fatty acids. Sugar and fatty acids do not contain nitrogen. Protein makes up muscles, ligaments, organs, tendons, . . . → Read More: All About Amino Acids