Fifteen end-stage cirrhotic patients and 15 renal failure patients will be included and matched with 30 healthy subjects. The following parameters will be evaluated during a morning testing session: gustatory sensitivity using a triangular detection threshold method for sweet, salty and umami solutions; preferences for fat- and carbohydrate-rich foods using the PrefQuest score; liking for six foods (protein-, carbohydrate- and fat-rich foods) and wanting for 18 foods (photographs); hunger sensation; energy intake (24 h ingested food); body composition (BMI and impedancemetry); resting energy expenditure (indirect calorimetry) and physical activity (questionnaire). Several plasmatic parameters (amino-acids, leptin, ghrelin, lipid profile) will be also determined.