Book excerpt: This issue of Clinics in Geriatric Medicine, guest edited by Dr. Amir Soumekh and Dr. Philip O. Katz, is devoted to Gastroenterology. Articles in this issue include: Esophageal and Gastric Motility Disorders, Gastroesophageal Reflux Disease (GERD) and Barrett's Esophagus, Non-steroidal Anti-Inflammatory Drugs (NSAIDS), Anticoagulation and Upper GI Bleeding, Managing Gallstone Disease in the Elderly, Fecal Incontinence, Constipation, Diarrhea, Functional Bowel Disease, Nutrition, Malnutrition and Obesity, Diverticulosis, Diverticulitis and Diverticular Bleeding, Gastrointestinal Bleeding, Colon Cancer Screening, Inflammatory Bowel Disease, and more.