Dairy products and colorectal cancer risk: a systematic review and meta-analysis of cohort studies

doi:10.1093/annonc/mdr269

Review

. 2012 Jan;23(1):37-45.

doi: 10.1093/annonc/mdr269. Epub 2011 May 26.

Dairy products and colorectal cancer risk: a systematic review and meta-analysis of cohort studies

D Aune¹, R Lau², D S M Chan², R Vieira², D C Greenwood³, E Kampman⁴, T Norat²

Affiliations

¹ Department of Epidemiology and Biostatistics, School of Public Health, Imperial College, London. Electronic address: d.aune@imperial.ac.uk.
² Department of Epidemiology and Biostatistics, School of Public Health, Imperial College, London.
³ Biostatistics Unit, Centre for Epidemiology and Biostatistics, University of Leeds, Leeds, UK.
⁴ Division of Human Nutrition, Wageningen University and Research Centre, Wageningen, The Netherlands.

PMID: 21617020
DOI: 10.1093/annonc/mdr269

Free article

Review

Dairy products and colorectal cancer risk: a systematic review and meta-analysis of cohort studies

D Aune et al. Ann Oncol. 2012 Jan.

Free article

. 2012 Jan;23(1):37-45.

doi: 10.1093/annonc/mdr269. Epub 2011 May 26.

Authors

D Aune¹, R Lau², D S M Chan², R Vieira², D C Greenwood³, E Kampman⁴, T Norat²

Affiliations

¹ Department of Epidemiology and Biostatistics, School of Public Health, Imperial College, London. Electronic address: d.aune@imperial.ac.uk.
² Department of Epidemiology and Biostatistics, School of Public Health, Imperial College, London.
³ Biostatistics Unit, Centre for Epidemiology and Biostatistics, University of Leeds, Leeds, UK.
⁴ Division of Human Nutrition, Wageningen University and Research Centre, Wageningen, The Netherlands.

PMID: 21617020
DOI: 10.1093/annonc/mdr269

Abstract

Background: Previous studies of the association between intake of dairy products and colorectal cancer risk have indicated an inverse association with milk, however, the evidence for cheese or other dairy products is inconsistent.

Methods: We conducted a systematic review and meta-analysis to clarify the shape of the dose-response relationship between dairy products and colorectal cancer risk. We searched the PubMed database for prospective studies published up to May 2010. Summary relative risks (RRs) were estimated using a random effects model.

Results: Nineteen cohort studies were included. The summary RR was 0.83 (95% CI [confidence interval]: 0.78-0.88, I2=25%) per 400 g/day of total dairy products, 0.91 (95% CI: 0.85-0.94, I2=0%) per 200 g/day of milk intake and 0.96 (95% CI: 0.83-1.12, I2=28%) per 50 g/day of cheese. Inverse associations were observed in both men and women but were restricted to colon cancer. There was evidence of a nonlinear association between milk and total dairy products and colorectal cancer risk, P<0.001, and the inverse associations appeared to be the strongest at the higher range of intake.

Conclusion: This meta-analysis shows that milk and total dairy products, but not cheese or other dairy products, are associated with a reduction in colorectal cancer risk.

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Dairy products and colorectal cancer risk: a systematic review and meta-analysis of cohort studies

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Dairy products and colorectal cancer risk: a systematic review and meta-analysis of cohort studies

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