An overview of nutrition in older age is provided. Definitions of and descriptions of the elements of nutrition; fluids, carbohydrates, fats, proteins, and fibers well as minerals are presented. Psychological-cultural and physiological aspects of nutrition are described. Dietary Guidelines for Americans along with MyPlate and MyPlate for Older Adults are discussed. Implications of anorexia, under- and overnutrition as well as failure to thrive are reviewed. There is discussion of adequate nutrition in institutional and community settings along with necessary education. Lastly, recommendations for adequate nutrition in older adults are outlined.