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. 2016 Apr;25(4):634-9.
doi: 10.1158/1055-9965.EPI-15-0924.

Coffee Consumption and the Risk of Colorectal Cancer

Stephanie L Schmit  1 , Hedy S Rennert  2 , Gad Rennert  3 , Stephen B Gruber  4
Affiliations

Coffee Consumption and the Risk of Colorectal Cancer

Stephanie L Schmit et al. Cancer Epidemiol Biomarkers Prev. 2016 Apr.

Abstract

Background: Coffee contains several bioactive compounds relevant to colon physiology. Although coffee intake is a proposed protective factor for colorectal cancer, current evidence remains inconclusive.

Methods: We investigated the association between coffee consumption and risk of colorectal cancer in 5,145 cases and 4,097 controls from the Molecular Epidemiology of Colorectal Cancer (MECC) study, a population-based case-control study in northern Israel. We also examined this association by type of coffee, by cancer site (colon and rectum), and by ethnic subgroup (Ashkenazi Jews, Sephardi Jews, and Arabs). Coffee data were collected by interview using a validated, semi-quantitative food frequency questionnaire.

Results: Coffee consumption was associated with 26% lower odds of developing colorectal cancer [OR (drinkers vs. non-drinkers), 0.74; 95% confidence interval (CI), 0.64-0.86; P < 0.001]. The inverse association was also observed for decaffeinated coffee consumption alone (OR, 0.82; 95% CI, 0.68-0.99; P = 0.04) and for boiled coffee (OR, 0.82; 95% CI, 0.71-0.94; P = 0.004). Increasing consumption of coffee was associated with lower odds of developing colorectal cancer. Compared with <1 serving/day, intake of 1 to <2 servings/day (OR, 0.78; 95% CI, 0.68-0.90; P < 0.001), 2 to 2.5 servings/day (OR, 0.59; 95% CI, 0.51-0.68; P < 0.001), and >2.5 servings/day (OR, 0.46; 95% CI, 0.39-0.54; P < 0.001) were associated with significantly lower odds of colorectal cancer (Ptrend < 0.001), and the dose-response trend was statistically significant for both colon and rectal cancers.

Conclusions: Coffee consumption may be inversely associated with risk of colorectal cancer in a dose-response manner.

Impact: Global coffee consumption patterns suggest potential health benefits of the beverage for reducing the risk of colorectal cancer. Cancer Epidemiol Biomarkers Prev; 25(4); 634-9. ©2016 AACR.

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Conflict of interest statement

Conflicts of Interest: The authors have no conflicts of interest to disclose.

Figures

Figure 1
Figure 1
Total daily coffee consumptions (servings/day) by major ethnic subgroup in the Molecular Epidemiology of Colorectal Cancer (MECC) Study.
See this image and copyright information in PMC

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