Cancer Causes & Control

, Volume 18, Issue 7, pp 753–764 | Cite as

Dietary fiber and colorectal cancer risk: the multiethnic cohort study

  • Abraham M. Y. NomuraEmail author
  • Jean H. Hankin
  • Brian E. Henderson
  • Lynne R. Wilkens
  • Suzanne P. Murphy
  • Malcolm C. Pike
  • Loic Le Marchand
  • Daniel O. Stram
  • Kristine R. Monroe
  • Laurence N. Kolonel
Original paper



To investigate the association of dietary fiber with colorectal cancer


A total of 85,903 men and 105,108 women completed a quantitative food frequency questionnaire in 1993–1996. A total of 1,138 men and 972 women were subsequently diagnosed with adenocarcinoma of the large bowel. Cox proportional hazards models were used to calculate multivariate adjusted relative risks (RR) and 95% confidence intervals (95% CI) for colorectal cancer.


High consumers of dietary fiber were more active, less overweight, and less likely to be cigarette smokers than low consumers in both sexes. Fiber was inversely associated with colorectal cancer risk after adjustment for age and ethnicity in men (RR = 0.49; 95% CI, 0.41–0.60, highest vs. lowest quintile) and women (RR = 0.75; 95% CI, 0.61–0.92). After further adjustment for lifestyle and dietary factors, the inverse association remained significant in men (RR = 0.62; 95% CI, 0.48–0.79), but not in women (RR = 0.88; 95% CI, 0.67–1.14). Adjustment for the combination of replacement hormone use with either cigarette smoking or body mass index accounted for the lack of association with fiber in women.


Dietary fiber was inversely associated with colorectal cancer risk in men, but its relation to replacement hormone use and other factors affected its inverse association in women.


Dietary fiber Colorectal cancer Multiethnic cohort 



This work was supported in part by grant R37 CA054281 from the National Cancer Institute, U.S. Department of Health and Human Services.


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Copyright information

© Springer Science + Business Media B.V. 2007

Authors and Affiliations

  • Abraham M. Y. Nomura
    • 1
    Email author
  • Jean H. Hankin
    • 1
  • Brian E. Henderson
    • 2
  • Lynne R. Wilkens
    • 1
  • Suzanne P. Murphy
    • 1
  • Malcolm C. Pike
    • 2
  • Loic Le Marchand
    • 1
  • Daniel O. Stram
    • 2
  • Kristine R. Monroe
    • 2
  • Laurence N. Kolonel
    • 1
  1. 1.Epidemiology Program, Cancer Research Center of HawaiiUniversity of HawaiiHonoluluUSA
  2. 2.Department of Preventive Medicine, Keck School of MedicineUniversity of Southern CaliforniaLos AngelesUSA

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