21. The inadequate production of intrinsic factor also leads to vitamin B 12 malabsorption and pernicious anemia. 22. There are certain patients who cannot tolerate the malabsorption and dumping syndrome associated with gastric bypass. 23. In consequence, malabsorption of carbohydrate, protein, lipids, minerals and vitamins inevitably occur. 24. Fructose malabsorption should be considered in patients with symptoms of major depression . . . ." 25. Conditions that can cause malabsorption such as cystic fibrosis or ulcerative colitis may also produce gynecomastia. 26. Bile acid sequestrants such as cholestyramine can be effective in chronic diarrhea due to bile acid malabsorption . 27. The link between gastrointestinal disorders and aphthous stomatitis is probably related to nutritional deficiencies caused by malabsorption . 28. The first operation that came into use for severe obesity worked by causing " malabsorption ." 29. A deficiency of sucrase may result in malabsorption of sugar, which can lead to potentially serious symptoms. 30. Glucose-galactose malabsorption generally becomes apparent in the first few weeks of a baby's life.