Lactose IntoleranceDairy ProductsLactose Tolerance TestLactaseFlatulenceLactoseBreath TestsMilkLactase-Phlorizin HydrolaseCalcium, DietaryHydrogenKwashiorkorAbdominal PainMalabsorption SyndromesNational Institute of Mental Health (U.S.)Glucose IntoleranceYogurtDiarrheaDairyingIrritable Bowel SyndromeIntestine, SmallCheesebeta-GalactosidaseFructose IntoleranceDietFecesOrthostatic IntoleranceLactose Synthase