In recent years, the development and approval of direct acting antivirals (DAAs) for the treatment of hepatitis C has resulted in a high rate of sustained viral response (SVR). Furthermore, nucleoside analogues are able to control HBV replication, and it has thus become possible to treat viral liver disease. However, number of patients with alcoholic liver diseases or nonalcoholic fatty liver diseases tends to increase of treatment for them are urgently needed. In addition, in the super-aging society, it is also necessary to emphasize measures against various complications for elderly patients with cirrhosis, and approaches, such as diagnosis, prevention, and therapeutic intervention of sarcopenia, have drawn recent attention. Thus, the disease background and treatment strategies continue to change due to various factors, such as the appearance of new therapeutic agents and the aging of patients. Metabolism in the liver, which is considered to be the largest organ in the human body, is the core of the treatment, and the nutritional source(s) leading to it is also at the foundation of the treatment. In this article, we describe the nutritional therapeutic options according to each condition.
