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Adult type lactose intolerance

Lactase persistence is an autosomal dominant condition characterized by the persistance to cleave lactose in the small intestine. In most people however the activity of the enzyme declines with age, which may result in irritable colon, symptoms diarrhea, gas bloat, flatulence, and abdominal pain. Responsible are polymorphisms located in the MCM6 gene that regulate transcription of the enzyme.

Symptoms

Diarrhea
In patients with adult type lactose intolerance, diarrhea after the ingestion of milk and other lactose containing products becomes apparent with increasing age.

Systematic

Food intolerance
Adult type lactose intolerance
LCT
MCM6
Eosinophil peroxidase deficiency
Fructose intolerance
Fructose malabsorption
Fructose-1,6-bisphosphatase deficiency
Fructosuria
Glucose-Galactose Malabsorption
Histamine Intolerance
Lactase deficiency
Lysinuric protein intolerance
Mast cell activation syndrome
Sitosterolemia
Trehalase deficiency

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Update: Aug. 14, 2020
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