主题词：Nutrition and Health in Aging; Clinical Nutrition and Gastroenterology; Diet and metabolism studies; Nutritional Studies and Diet; Body Composition Measurement Techniques; Muscle metabolism and nutrition; Metabolism and Genetic Disorders; Liver Disease Diagnosis and Treatment; Enhanced Recovery After Surgery; Fatty Acid Research and Health; Frailty in Older Adults; Child Nutrition and Feeding Issues; Infant Nutrition and Health; Child Nutrition and Water Access; Hyperglycemia and glycemic control in critically ill and hospitalized patients; Adipose Tissue and Metabolism; Gut microbiota and health; Obesity, Physical Activity, Diet; Dysphagia Assessment and Management; Dialysis and Renal Disease Management; Electrolyte and hormonal disorders; Bariatric Surgery and Outcomes; Dietary Effects on Health; Vitamin D Research Studies; Central Venous Catheters and Hemodialysis