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Amount of Lactose Causing Symptoms in People With Lactose Intolerance and Ulcerative Colitis

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00403923
Recruitment Status : Completed
First Posted : November 27, 2006
Last Update Posted : February 16, 2009
Information provided by:
University Hospitals, Leicester

Brief Summary:

The hypothesis underlying this study is that failure to recognise the role of lactose intolerance among patients with ulcerative colitis has led to inappropriate dietary advice and treatment with drugs that contain lactose as a filler. These failures exacerbate symptoms and lead to the unnecessary use of immune suppressant drugs.

There is disagreement amongst researchers regarding the amount of lactose needed to cause symptoms in those who are lactose intolerance. The general consensus is that the amount of lactose in a glass of milk (12 grams) is enough to cause mild symptoms in most patients who are lactose intolerant (1). However, there have been a number of studies and case studies that argue that much lower amounts can cause symptoms (2, 3, 4, 5). This could be as little as 0.02 grams (6).

Ulcerative colitis is a chronic relapsing inflammatory disease of the colon and rectum, characterised by recurrent episodes of abdominal pain and profuse diarrhoea. The prevalence of lactose intolerance in patients with ulcerative colitis is not greater than in the general population, but there is no evidence as to whether these patients are more sensitive to lactose.

This study will identify the threshold at which symptoms of lactose intolerance develop in those who have both lactose intolerance and ulcerative colitis, to provide appropriate advice and treatment in the management of patients with these conditions.

Condition or disease Intervention/treatment
Lactose Intolerance Ulcerative Colitis Dietary Supplement: Lactose in water

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Study Type : Observational
Estimated Enrollment : 48 participants
Observational Model: Case-Crossover
Time Perspective: Prospective
Official Title: A Study to Determine the Threshold of Lactose Ingestion That Provokes Symptoms in Lactose Intolerant People Who Also Have Ulcerative Colitis
Study Start Date : April 2007
Actual Primary Completion Date : June 2007
Actual Study Completion Date : June 2007

Resource links provided by the National Library of Medicine

Group/Cohort Intervention/treatment
Patients with known lactose intolerance Dietary Supplement: Lactose in water

Primary Outcome Measures :
  1. Symptoms of pain and diarrhoea [ Time Frame: Over 48 hours ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Patients with lactose intolerance

Inclusion Criteria:

  1. Confirmed lactose intolerance demonstrated with a lactose intolerance test.
  2. Confirmed ulcerative colitis demonstrated with histological and radiological tests.
  3. Adherence to a lactose free diet for at least four days before the start of the study.

Exclusion Criteria:

  1. Failure to adhere to a lactose free diet.
  2. Pregnancy.
  3. Unwillingness to comply with study outline.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00403923

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United Kingdom
Leicester General Hospital
Leicester, Leicestershire, United Kingdom, LE5 4PW
Sponsors and Collaborators
University Hospitals, Leicester
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Principal Investigator: John F Mayberry, DSc MD University Hospitals, Leicester
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Responsible Party: Carolyn Burden, University Hospitals of Leicester Identifier: NCT00403923    
Other Study ID Numbers: UHL 10253
First Posted: November 27, 2006    Key Record Dates
Last Update Posted: February 16, 2009
Last Verified: February 2009
Keywords provided by University Hospitals, Leicester:
Lactose intolerance
Ulcerative colitis
Additional relevant MeSH terms:
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Colitis, Ulcerative
Lactose Intolerance
Gastrointestinal Diseases
Digestive System Diseases
Colonic Diseases
Intestinal Diseases
Pathologic Processes
Inflammatory Bowel Diseases
Malabsorption Syndromes
Carbohydrate Metabolism, Inborn Errors
Metabolism, Inborn Errors
Genetic Diseases, Inborn
Metabolic Diseases