Chapter 10: Nutrition in Aging & Older Adult Health

Food serves a purpose far beyond biological sustenance, functioning as a vital medium for social connection, cultural expression, and spiritual practice. As the demographic landscape of the United States shifts toward an increasingly diverse and aging "baby boomer" population, nursing professionals must integrate an understanding of these cultural values into nutritional care. The aging process introduces significant physiological challenges, including the loss of skeletal muscle mass, diminished efficiency in organ function, and a decline in the sensory perception of taste and smell, all of which increase the risk for dehydration and malabsorption. Beyond physical changes, socioeconomic hurdles such as poverty, social isolation, and the impact of grieving can severely limit an older adult's access to or interest in a healthy diet. To combat these risks, practitioners utilize specific tools to differentiate between abbreviated nutritional screenings, such as the Nutrition Screening Initiative's checklist, and comprehensive assessments that analyze anthropometric data, dietary histories, and biochemical markers like serum albumin or transferrin. Guidelines like the MyPlate model for older adults provide a framework for maintaining a nutrient-dense, plant-based diet rich in fiber and antioxidants to prevent chronic diseases. Furthermore, the management of geriatric health requires careful monitoring of drug-nutrient interactions, as medications frequently alter the absorption and metabolism of essential vitamins. For patients facing severe challenges like dysphagia or significant weight loss, nurses implement therapeutic interventions ranging from texture-modified diets to specialized enteral or parenteral nutrition support. Finally, the chapter addresses "geriatric failure to thrive," a complex condition of multi-domain decline that underscores the necessity of interdisciplinary collaboration to restore vitality and functional status in older adults.