What is Protein? Proteins are complex molecules present in all living organisms and provide many essential functions in the body. These molecules are formed through the ‘building blocks’ of 20 amino acids, which can be deemed essential or non-essential - those deemed essential cannot be synthesised in the body and must be obtained through dietary intake, whereas non-essential can be synthesised by the body through the metabolism of other amino acids. The number of essential amino acids depends on the [...]