Lactose Intolerance

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Milk products contain a type of sugar called lactose. Digesting this sugar requires the enzyme lactase. Babies and young children almost always produce ample amounts of lactase, but by adolescence, lactase production often falls. In some people, it virtually disappears. As a result, consuming milk and most other dairy products can cause symptoms such as bloating, cramping, abdominal gas, and even diarrhea, as the undigested lactose ferments in the digestive system. The severity of symptoms is usually related to how much lactose is consumed.

Lactose intolerance occurs in about 25% of Caucasians of northern European descent, but 50 to 95% of people with other ethnic backgrounds may be affected. Crohn' s disease, gastroenteritis, intestinal parasites, and other disorders affecting the small intestine, where lactase is made, can make the situation worse.

A diagnosis of lactose intolerance is made by family history and a trial of a lactose-free diet. If symptoms improve, it can be assumed that lactose is the problem. A doctor may confirm the diagnosis by giving a dose of milk sugar and then measuring the level of hydrogen released in the breath.

General Recommendations

If eliminating dairy products from your diet brings no results, consult with your doctor to make sure you are not suffering from another digestive condition.

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