主题词：Clinical Nutrition and Gastroenterology; Nutrition and Health in Aging; Diet and metabolism studies; Muscle metabolism and nutrition; Fatty Acid Research and Health; Muscle Physiology and Disorders; Adipose Tissue and Metabolism; Gut microbiota and health; Nutritional Studies and Diet; Diet, Metabolism, and Disease; Regulation of Appetite and Obesity; Adipokines, Inflammation, and Metabolic Diseases; Body Composition Measurement Techniques; Infant Nutrition and Health; Enhanced Recovery After Surgery; Nutrition, Genetics, and Disease; Metabolism and Genetic Disorders; Exercise and Physiological Responses; Birth, Development, and Health; Antioxidant Activity and Oxidative Stress; Child Nutrition and Water Access; Peroxisome Proliferator-Activated Receptors; Hyperglycemia and glycemic control in critically ill and hospitalized patients; Liver Disease Diagnosis and Treatment; Vitamin D Research Studies