Lactase is composed of more than 1900 amino acids<\/strong>It is excreted by the intestinal cells (enterocytes) into the digestive tract and its main role is to break down the lactose<\/a>a type of disaccharide, into two simple sugars: glucose and galactose ; lactose<\/a> is often called milk sugar because it is found mainly in cow's milk and dairy products (cheese, butter and yoghurt), and has the chemical formula C12 H22 O11.<\/span><\/p>\n This enzyme has an activity that varies over the course of a person's life<\/strong>In the first half of life, it will be at its peak at birth and then slowly decrease during childhood as milk consumption decreases. Finally, it disappears almost completely in adults, although it remains active in a few people. \u00a0<\/span><\/span><\/p>\n Lactose intolerance is an abdominal syndrome marked by the appearance of acute abdominal pain, bloating and diarrhoea<\/a> sometimes vomiting<\/strong> especially in children, 30 minutes to 2 hours after ingesting dairy products because of their high lactose content. The intensity of symptoms depends on the quantity ingested and the degree of lactase deficiency. Intolerance to lactose may have no symptoms<\/a> in certain subjects.\u00a0<\/span><\/span><\/p>\n Lactase deficiency is linked to 3 main causes:<\/span><\/p>\n To confirm the diagnosis of lactose intolerance, several tests can be done:\u00a0<\/span><\/span><\/p>\nLactose intolerance<\/b><\/span><\/h2>\n
Causes of lactose intolerance<\/b><\/span><\/h2>\n
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How is lactose intolerance diagnosed?<\/b><\/span><\/h2>\n
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