Fructose, Lactose and Saccharose/Isomaltose Intolerance

Maldigestion of carbohydrates is a frequent cause of chronic abdominal symptoms. The most common symptoms are abdominal cramps, flatulence and diarrhoea. These episodes are triggered by the sugars lactose, fructose and sorbitol, but may also be triggered by saccharose and isomaltose. Intolerances can be acquired or innate. Both forms are based on an enzyme deficiency or defect. Acquired intolerances can be detected using an H2 breath test. This maldigestion may lead to an oversupply of carbohydrates to the colon. These carbohydrates are fermented by bacteria. The hydrogen (H2) produced during this process can be detected in exhaled air.  There are specific diagnostic gene tests for innate intolerances.