Definitions for lactose intolerance
lac·tose in·tol·er·ance

Princeton's WordNetRate this definition:0.0 / 0 votes

1. lactose intolerance, lactase deficiency, milk intolerancenoun

   congenital disorder consisting of an inability to digest milk and milk products; absence or deficiency of lactase results in an inability to hydrolyze lactose

GCIDERate this definition:0.0 / 0 votes

1. lactose intolerancenoun

   A physiological condition in which lactose cannot be hydrolyzed in the intestine, leading to uncomfortable gaseousness, cramps, or diarrhea after eating a lactose-containing food such as milk or ice cream. The symptoms may be prevented by ingesting a preparation of beta-galactosidase before or together with dairy products.

WiktionaryRate this definition:0.0 / 0 votes

1. lactose intolerancenoun

   Inability to fully metabolize lactose.

WikipediaRate this definition:0.0 / 0 votes

1. Lactose intolerance

   Lactose intolerance is a common condition caused by a decreased ability to digest lactose, a sugar found in dairy products. Those affected vary in the amount of lactose they can tolerate before symptoms develop. Symptoms may include abdominal pain, bloating, diarrhea, flatulence, and nausea. These symptoms typically start thirty minutes to two hours after eating or drinking milk-based food. Their severity typically depends on the amount a person eats or drinks. Lactose intolerance does not cause damage to the gastrointestinal tract.Lactose intolerance is due to the lack of the enzyme lactase in the small intestines to break lactose down into glucose and galactose. There are four types: primary, secondary, developmental, and congenital. Primary lactose intolerance occurs as the amount of lactase declines as people age. Secondary lactose intolerance is due to injury to the small intestine. Such injury could be the result of infection, celiac disease, inflammatory bowel disease, or other diseases. Developmental lactose intolerance may occur in premature babies and usually improves over a short period of time. Congenital lactose intolerance is an extremely rare genetic disorder in which little or no lactase is made from birth. The onset of primary lactose intolerance, the most common type, is typically in late childhood or early adulthood, but prevalence increases with age.Diagnosis may be confirmed if symptoms resolve following eliminating lactose from the diet. Other supporting tests include a hydrogen breath test and a stool acidity test. Other conditions that may produce similar symptoms include irritable bowel syndrome, celiac disease, and inflammatory bowel disease. Lactose intolerance is different from a milk allergy. Management is typically by decreasing the amount of lactose in the diet, taking lactase supplements, or treating the underlying disease. People are able to drink at least one cup of milk without developing symptoms, with greater amounts tolerated if drunk with a meal or throughout the day.Worldwide, around 65% of adults are affected by lactose malabsorption. Other mammals usually lose the ability to digest lactose after weaning and this was the ancestral state of all humans before the recent evolution of lactase persistence, which extends lactose tolerance into adulthood. Lactase persistence evolved in several populations independently, probably as an adaptation to the domestication of dairy animals around 10,000 years ago. Today the prevalence of lactose tolerance varies widely between regions and ethnic groups. The ability to digest lactose is most common in people of European descent, and to a lesser extent in some parts of the Middle East and Africa. Lactose intolerance is common among people of Jewish descent, as well as in many African countries and Arab countries. Traditional food cultures reflect local variations in tolerance and historically many societies have adapted to low levels of tolerance by making dairy products that contain less lactose than fresh milk. The medicalization of lactose intolerance as a disorder has been attributed to biases in research history, since most early studies were conducted amongst populations which are normally tolerant, as well as the cultural and economic importance of milk in countries such as the United States.

WikidataRate this definition:0.0 / 0 votes

1. Lactose intolerance

   Lactose intolerance, also called lactase deficiency and hypolactasia, is the inability to digest lactose, a sugar found in milk and to a lesser extent milk-derived dairy products. It is not a disorder as such, but a genetically-determined characteristic. Lactose intolerant individuals have insufficient levels of lactase, an enzyme that catalyzes hydrolysis of lactose into glucose and galactose, in their digestive system. In most cases this causes symptoms which may include abdominal bloating and cramps, flatulence, diarrhea, nausea, borborygmi, or vomiting after consuming significant amounts of lactose. Some studies have produced evidence that milk consumption by lactose intolerant individuals may be a significant cause of inflammatory bowel disease. Most mammals normally cease to produce lactase, becoming lactose intolerant, after weaning, but some human populations have developed lactase persistence, in which lactase production continues into adulthood. It is estimated that 75% of adults worldwide show some decrease in lactase activity during adulthood. The frequency of decreased lactase activity ranges from 5% in northern Europe through 71% for Sicily to more than 90% in some African and Asian countries. This distribution is now thought to have been caused by recent natural selection favoring lactase-persistent individuals in cultures in which dairy products are available as a food source. While it was first thought that this would mean that populations in Europe, India, and Africa had high frequencies of lactase persistence because of a particular mutation, it was later shown that lactase persistence is caused by several independently occurring mutations.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Lactose Intolerance

   The condition resulting from the absence or deficiency of LACTASE in the MUCOSA cells of the GASTROINTESTINAL TRACT, and the inability to break down LACTOSE in milk for ABSORPTION. Bacterial fermentation of the unabsorbed lactose leads to symptoms that range from a mild indigestion (DYSPEPSIA) to severe DIARRHEA. Lactose intolerance may be an inborn error or acquired.

Matched Categories

1. • Genetic Disease

How to pronounce lactose intolerance?

1. Alex

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How to say lactose intolerance in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of lactose intolerance in Chaldean Numerology is: 4

2. Pythagorean Numerology

   The numerical value of lactose intolerance in Pythagorean Numerology is: 2

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=lactose intolerance
2. ^ GCIDE
   https://gcide.gnu.org.ua/?q=lactose intolerance
3. ^ Wiktionary
   https://en.wiktionary.org/wiki/Lactose_Intolerance
4. ^ Wikipedia
   https://en.wikipedia.org/wiki/Lactose_Intolerance
5. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=lactose intolerance