Nutrition and Liver Disease

The liver is a dynamic organ that plays a central role in metabolism and serves several critical functions in maintaining overall nutritional health, including helping maintain metabolic homeostasis by ensuring energy needs are met, eliminating waste products, and maintaining nutrient balance. Hepatic injury/liver dysfunction can compromise multiple metabolic processes and lead to complications such as malnutrition (deficiencies, excesses, or imbalances in a person's nutritional or caloric intake). The adverse clinical consequences of malnutrition vary widely from global malnutrition that can result in frailty, cachexia, and/or sarcopenia to micronutrient imbalances that can lead to individual functional alterations. Malnutrition is associated with a higher rate of complications including ascites, hepatic encephalopathy, and variceal bleeding, progressing to liver failure and poor survival outcomes. Malnutrition prior to liver transplantation is associated with worse postoperative quality of life, worse outcomes following decompensation events, and higher recurrence rates of hepatocellular carcinoma. Several treatment options are discussed.