It is possible that the main title of the report Lactose Intolerance is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.
Lactose is the predominant sugar found in milk and milk products. People with Lactose intolerance (LI) cannot properly digest lactose because they lack or are deficient in the enzyme, lactase, which is key to the digestion of lactose. Lactose is a complex sugar made up of two different sugar molecules (disaccharide), galactose and glucose, each of which is a simple (monosaccharide) sugar and more readily absorbed in the body's stomach and intestine and processed in other organs.
LI is common among adults in the United States and elsewhere. It is worrisome and uncomfortable but not at all dangerous.
This disorder is an inborn error of carbohydrate metabolism characterized by the impaired ability to absorb nutrients from the small intestine (malabsorption syndrome).
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This is an abstract of a report from the National Organization for Rare Disorders (NORD). A copy of the complete report can be downloaded free from the NORD website for registered users. The complete report contains additional information including symptoms, causes, affected population, related disorders, standard and investigational therapies (if available), and references from medical literature. For a full-text version of this topic, go to www.rarediseases.org and click on Rare Disease Database under "Rare Disease Information".
The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only. NORD recommends that affected individuals seek the advice or counsel of their own personal physicians.
It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report
This disease entry is based upon medical information available through the date at the end of the topic. Since NORD's resources are limited, it is not possible to keep every entry in the Rare Disease Database completely current and accurate. Please check with the agencies listed in the Resources section for the most current information about this disorder.
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Last Updated: 8/7/2007
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