This open access book aims to primarily support nurses as leaders and champions of multimodal, Interdisciplinary nutrition care for older adults.  A structured approach to fundamentals of nutrition care across Interdisciplinary settings is combined with additional short chapters about special topics in geriatric nutrition. The book is designed to provide highly accessible information on evidence-based management and care for older adults, with a focus on practical guidance and advice across acute, rehabilitation, and primary and secondary malnutrition prevention settings.The cost of malnutrition in England alone has been estimated to be  19.6 billion per year, or more than 15% of the total public expenditure on health and social care. ^65 years. The importance and benefit of specialised nutrition care, delivered by experts in field, is well established for those with complex nutrition care needs.