<unk>  is a rare condition in which the cells lining the intestine cannot take in the sugars<unk>  and<unk> , which prevents proper digestion of these molecules and larger molecules made from them.<unk>  and<unk>  are called simple sugars, or monosaccharides. Sucrose and lactose are called disaccharides because they are made from two simple sugars, and are broken down into these simple sugars during digestion. Sucrose is broken down into<unk>  and another simple sugar called fructose, and lactose is broken down into<unk>  and<unk> . As a result, lactose, sucrose and other compounds made from carbohydrates cannot be digested by individuals with<unk> .
Glucose-galactose malabsorption
Fructose malabsorption
Sucrose intolerance
Exocrine pancreatic insufficiency
Lactose intolerance
Bile acid malabsorption
Lysinuric protein intolerance
Small intestinal bacterial overgrowth