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Cow milk is not responsible for most gastrointestinal immune-like syndromes - evidence from a population-based study.
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2005 (English)In: American Journal of Clinical Nutrition, ISSN 0002-9165, E-ISSN 1938-3207, Vol. 82, no 6, 1327-1335 p.Article in journal (Refereed) Published
Abstract [en]

Background: Gastrointestinal hypersensitivity to cow milk (CM) may be more common among school-aged children and young adults than previously thought.

Objective: The objective was to study various gastrointestinal complaints and the immunologic mechanisms associated with food-related, especially CM-related, gastrointestinal disorders in young adults.

Design: Of 827 subjects aged 16–21 y who completed a questionnaire on food-related gastrointestinal symptoms, 49 symptomatic subjects agreed to a clinical examination, including an interview, blood tests, a lactose-maldigestion test, a blinded CM challenge and, in severely symptomatic subjects (n = 12), an endoscopic examination. Twenty-nine subjects served as controls.

Results: Approximately 10% of the subjects reported having major gastrointestinal symptoms, mainly food-related (n = 70 of 86), during the preceding year. Specific organic disease was found in 2 symptomatic subjects: 1 case of celiac disease and 1 of colitis. The result of the lactose-maldigestion test was positive in 16 of the remaining 47 symptomatic subjects, but only 4 carried the C/C-13910 genotype for adult-type hypolactasia. The symptomatic subjects had restricted their consumption of certain foods, particularly CM. However, in a blinded challenge, CM-induced symptoms were rare. The symptomatic subjects had higher plasma soluble intercellular adhesion molecule 1 (P = 0.007) and lower granzyme A (P = 0.001) concentrations than did the control subjects. Duodenal biopsy samples tended to have higher intraepithelial CD3+ cell counts (P = 0.065) and a higher expression of transforming growth factor ß (P = 0.073) and interleukin 12p35 messenger RNA (P = 0.075) than did the control subjects.

Conclusions: In an unselected cohort of young adults, 8% reported food-related gastrointestinal symptoms. The finding of immunologic activity implied the existence of a food-related gastrointestinal syndrome but not one induced by CM.

Place, publisher, year, edition, pages
2005. Vol. 82, no 6, 1327-1335 p.
Keyword [en]
cow milk hypersensitivity, cytokines, endoscopy, gastrointestinal symptoms
National Category
Medical and Health Sciences
URN: urn:nbn:se:liu:diva-30852Local ID: 16510OAI: diva2:251675
Available from: 2009-10-09 Created: 2009-10-09 Last updated: 2010-05-19

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Vaarala, Outi
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