This passage explores the nutritional needs of adults throughout their lifespan, with a particular focus on aging. It outlines how aging affects physical and mental health and explains how nutrition plays a key role in promoting health and preventing disease. The passage discusses how societal changes, such as the increasing number of older adults, influence healthcare and emphasize the importance of healthy lifestyles and disease prevention. The text also highlights the importance of individualizing nutritional plans, taking into account socioeconomic factors and cultural differences. Finally, it discusses the role of nutrition in managing chronic diseases and the importance of addressing the unique needs of older adults living in alternative living arrangements.