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Crohn's disease: the cold chain hypothesis.

Alastair Forbes1, Tommy Kalantzis

  • 1St. Mark's Hospital and Academic Institute, Watford Road, Harrow, HA1 3UJ, UK. alastair.forbes@ic.ac.uk

International Journal of Colorectal Disease
|August 2, 2005
PubMed
Summary

Infantile exposure to cold-tolerant microbes may trigger Crohn's disease. This study found earlier fridge exposure in Crohn's patients compared to controls, supporting the hypothesis.

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Area of Science:

  • Gastroenterology
  • Microbiology
  • Epidemiology

Background:

  • A novel hypothesis suggests Crohn's disease (CD) originates from early-life exposure to microorganisms surviving refrigeration.
  • This hypothesis requires investigation through empirical studies.

Purpose of the Study:

  • To investigate the association between infantile exposure to refrigerated food and the development of Crohn's disease.

Main Methods:

  • A case-control study was conducted.
  • Participants included 88 patients with Crohn's disease, 88 with ulcerative colitis (UC), and 88 healthy controls.
  • Data collected included age at first exposure to refrigeration.

Main Results:

  • The mean age at first refrigeration exposure was 5.6 years for CD patients, 5.5 years for UC patients, and 7.6 years for controls.
  • Differences were more pronounced in individuals above the median age.
  • A statistically significant difference was observed between Crohn's disease patients and controls (p=0.045).

Conclusions:

  • The findings provide statistical support for the hypothesis linking early-life exposure to cold-tolerant microorganisms via refrigerated food to Crohn's disease.
  • Further research is warranted to elucidate the specific mechanisms involved.

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