Some individuals have an inability
to digest specific types of carbohydrates due to a lack of one or more
intestinal enzymes. This carb intolerance is a type of malabsorption syndrome
sometimes referred to as Carbohydrate
Intolerance Disorder (CID). It can be congenital (fairly rare), acquired, or
secondary to conditions that damage the small-intestine (e.g., celiac disease, tropical sprue, acute
intestinal infections a child, symptoms may include diarrhea and failure to
gain weight appropriately. In an adult, symptoms may include watery diarrhea, abdominal
cramps and bloating, excessive flatus or gas, and nausea, borborygmi or stomach
rumbling. No surprise, this malabsorption is often readily controlled by
avoiding dietary sugars that cannot be absorbed; for example, by following a
lactose-free diet in cases of lactase deficiency.
www.merckmanuals.com/home/digestive-disorders/malabsorption/lactose-intolerance
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