1. Introduction and demographic data / Sue E. Meiner -- 2. General disorders of the upper gastrointestinal system / Beverly Anderson Reno -- 3. Gastroesophageal reflux disease / Catherine Hili -- 4. Motor dysfunctions of the stomach / Susan D. Kowalski -- 5. Helicobacter pylori and ulcers / Phyllis J. Atkinson -- 6. Bacterial, viral, and parasitic infections of the colon / Sue E. Meiner -- 7. Vitamin B[subscript 12] and folate deficiencies / Lori Candela -- 8. Cancers of the gastrointestinal tract / Ann Schmidt Luggen -- 9. Nutrition and gastrointestinal diseases / Barbara Resnick -- 10. Irritable bowel syndrome / Sue E. Meiner -- 11. Diverticular disease / D. Sue Clarren -- 12. Constipation and noninfectious diarrhea / Lynn Ferebee and Sue E. Meiner -- 13. Hemorrhoids and problems of the anus and rectum / Catherine Hill