The effects of aging on the digestive system.
D000005:Abdomen; D000368:Aged; D001660:Biliary Tract Diseases / Q000175:diagnosis; D003680:Deglutition Disorders / Q000175:diagnosis; D003967:Diarrhea / Q000175:diagnosis; D004066:Digestive System Diseases / Q000175:diagnosis* / Q000628:therapy; D006471:Gastrointestinal Hemorrhage / Q000175:diagnosis; D005769:Gastrointestinal Motility; D006801:Humans; D007565:Jaundice / Q000175:diagnosis; D009780:Occult Blood; D010146:Pain