title: Nutrition in old age.
mesh_terms: D000375:Aging; D001066:Appetite; D001823:Body Composition; D004044:Dietary Proteins / Q000378:metabolism; D002149:Energy Intake; D004734:Energy Metabolism; D006801:Humans; D009747:Nutritional Physiological Phenomena; D009751:Nutritional Requirements
chemical_list: D004044:Dietary Proteins