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Intake of whole grains from different cereal and food sources and incidence of colorectal cancer in the Scandinavian HELGA cohort

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Abstract

Purpose

A high intake of whole grains has been associated with a lower incidence of colorectal cancer, but few studies are available on the association with whole grains from different cereals, for example, wheat, rye and oats, and none has addressed these separately. The objective of this study was to investigate the association between whole-grain intake and colorectal cancer.

Method

We used data from the large population-based Scandinavian cohort HELGA consisting of 108,000 Danish, Swedish, and Norwegian persons, of whom 1,123 developed colorectal cancer during a median of 11 years of follow-up. Detailed information on daily intake of whole-grain products, including whole-grain bread, crispbread, and breakfast cereals, was available, and intakes of total whole grains and specific whole-grain species (wheat, rye, and oats) were estimated. Associations between these whole-grain variables and the incidence of colorectal cancer were investigated using Cox proportional hazards models. Intake of whole-grain products was associated with a lower incidence of colorectal cancer per 50-g increment (incidence rate ratio [IRR], 0.94; 95 % confidence interval [CI], 0.89, 0.99), and the same tendency was found for total whole-grain intake (IRR pr. 25-g increment, 0.94; 95 % CI, 0.88, 1.01). Intake of whole-grain wheat was associated with a lower incidence of colorectal cancer (IRR for highest versus lowest quartile of intake, 0.66; 95 % CI, 0.51, 0.85), but no statistical significant linear trend was observed (p for trend: 0.18). No significant association was found for whole-grain rye or oats.

Conclusion

Whole-grain intake was associated with a lower incidence of colorectal cancer.

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Acknowledgments

This study was supported by NordForsk (Centre of Excellence programme HELGA (070015)) and the Danish Cancer Society. The authors acknowledge data manager Knut Hansen for assistance with data preparation and project coordinator Jytte Fogh Larsen for administrative assistance.

Conflict of interest

The authors declare no conflicts of interest.

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Authors and Affiliations

  1. Danish Cancer Society Research Center, Strandboulevarden 49, 2100, Copenhagen Ø, Denmark

    Cecilie Kyrø, Jane Christensen, Anne Tjønneland & Anja Olsen

  2. Department of Community Medicine, University of Tromsø, Tromsø, Norway

    Guri Skeie & Eiliv Lund

  3. Department of Public Health, Section of Environmental Health, Faculty of Health Sciences, University of Copenhagen, Copenhagen, Denmark

    Steffen Loft

  4. Department of Food Science, BioCenter, Swedish University of Agricultural Sciences, Uppsala, Sweden

    Rikard Landberg

  5. Department of Public Health and Clinical Medicine, Nutritional Research, Umeå University, Umeå, Sweden

    Lena M. Nilsson

  6. Department of Medical Biosciences, Pathology, Umeå University, Umeå, Sweden

    Richard Palmqvist

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  1. Cecilie Kyrø
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Correspondence to Cecilie Kyrø.

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Kyrø, C., Skeie, G., Loft, S. et al. Intake of whole grains from different cereal and food sources and incidence of colorectal cancer in the Scandinavian HELGA cohort. Cancer Causes Control 24, 1363–1374 (2013). https://doi.org/10.1007/s10552-013-0215-z

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  • DOI: https://doi.org/10.1007/s10552-013-0215-z

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