Protein is used to build your body tissue and repair the damaged cell. Muscle, skin, hair, bone and many other tissues are built from protein. This substance is produced in the liver or you can get it from food. When your liver does not work well, protein synthesis is decreased or even stopped. However, your body tries to compensate the condition by breaking down the muscle. If this condition keeps going, malnutrition is likely to occur, especially if you have improper nutrition intake.