This issue of Clinics in Geriatric Medicine is devoted to Nutrition in Older Adults. Guest Editor John E. Morley, MD has assembled a group of expert authors to review the following topics: Anorexia of Aging; Protein and Older Persons; Screening for Malnutrition in Older People; Obesity and Aging; Vitamins; Sarcopenia; Diabetes: Nutrition and Exercise; Frailty, Exercise and Nutrition; Dehydration; Cholesterol and Older Persons; Cognition and Nutrition; and Gastric Emptying in the Elderly.