Tuesday, June 29, 2010

What is lactose intolerance?

owh..gile2..umo baru 24 young olds da berkepuk2 kumpul penyakit...haish!!! aku ingat selama ni minum2 susu, pastu tetido sampai berjam2 tu, biase.....aku ingat bila minum teh tarik, pastu sakit2 perut cucuk2 tu, biase......aku ingat bila aku minum pape yang dicampur susu, tak kira susu pekat ke, susu cair ke, aku rasa nak muntah tu, biase..RUPA2NYA, MEMANG LUAR BIASA!!! Haish Lagi!!!!!

Lactose Intolerance


Lactose intolerance is the inability or insufficient ability to digest lactose, a sugar found in milk and milk products. Lactose intolerance is caused by a deficiency of the enzyme lactase, which is produced by the cells lining the small intestine. Lactase breaks down lactose into two simpler forms of sugar called glucose and galactose, which are then absorbed into the bloodstream.

Drawing of the digestive tract. The stomach, liver, large  intestine, small intestine, appendix, and anus are labeled.
The digestive tract.

Not all people with lactase deficiency have digestive symptoms, but those who do may have lactose intolerance. Most people with lactose intolerance can tolerate some amount of lactose in their diet.

People sometimes confuse lactose intolerance with cow milk allergy. Milk allergy is a reaction by the body’s immune system to one or more milk proteins and can be life threatening when just a small amount of milk or milk product is consumed. Milk allergy most commonly appears in the first year of life, while lactose intolerance occurs more often in adulthood.


What causes lactose intolerance?

The cause of lactose intolerance is best explained by describing how a person develops lactase deficiency.

Primary lactase deficiency develops over time and begins after about age 2 when the body begins to produce less lactase. Most children who have lactase deficiency do not experience symptoms of lactose intolerance until late adolescence or adulthood.

Researchers have identified a possible genetic link to primary lactase deficiency. Some people inherit a gene from their parents that makes it likely they will develop primary lactase deficiency. This discovery may be useful in developing future genetic tests to identify people at risk for lactose intolerance.

Secondary lactase deficiency results from injury to the small intestine that occurs with severe diarrheal illness, celiac disease, Crohn’s disease, or chemotherapy. This type of lactase deficiency can occur at any age but is more common in infancy.


Who is at risk for lactose intolerance?

Lactose intolerance is a common condition that is more likely to occur in adulthood, with a higher incidence in older adults. Some ethnic and racial populations are more affected than others, including African Americans, Hispanic Americans, American Indians, and Asian Americans. The condition is least common among Americans of northern European descent.

Infants born prematurely are more likely to have lactase deficiency because an infant’s lactase levels do not increase until the third trimester of pregnancy.


What are the symptoms of lactose intolerance?

People with lactose intolerance may feel uncomfortable 30 minutes to 2 hours after consuming milk and milk products. Symptoms range from mild to severe, based on the amount of lactose consumed and the amount a person can tolerate.

Common symptoms include

  • abdominal pain
  • abdominal bloating
  • gas
  • diarrhea
  • nausea

p/s: tak larat da nak baca... sambung la baca sendirik.... Haish!!!

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