Amino acids are the molecules that make up protein.In total their are 20 different amino acids. 8 of which cannot be manufactured in the body and must be obtained through diet.These are known as Essential Amino acids. For children 9 amino acids. The body needs all essential amino acids, these are complete acids can be obtained through:EggsFishMeatsDairy (milks & cheese)Soy beansSome proteins are known as incomplete essential acids, this is because these proteins have missing amino acids;CerealsLegumesMaize NutsWhole grainsCombining two incomplete proteins together compensate for each other, therefor making a complete essential acid. Excessive protein consumption with not lead to muscular growth, it can damage kidney’s and lead to dangerous toxic ammonia levels in blood.