Abstract
Purpose
The role of various foods and nutrients, and their combinations, on prostate cancer risk remains largely undefined. We addressed therefore the issue of complex dietary patterns.
Methods
We analyzed data from an Italian case–control study, including 1,294 men with prostate cancer and 1,451 hospital controls. We carried out an exploratory principal component factor analysis on 28 selected nutrients in order to identify dietary patterns. We estimated odds ratios (ORs) and corresponding confidence intervals (CIs) using logistic regression models on quintiles of factor scores, adjusting for major confounding variables.
Results
We identified five dietary patterns, labeled “Animal Products,” “Vitamins and Fiber,” “Starch-rich,” “Vegetable Unsaturated Fatty Acids (VUFA),” and “Animal Unsaturated Fatty Acids (AUFA).” We found positive associations between prostate cancer and “Animal Products” (OR for the highest vs. the lowest score quintile: 1.51, 95 % CI 1.16–1.96), “Starch-rich” (OR 1.50, 95 % CI 1.16 1.93), and “AUFA” (OR 1.32, 95 % CI 1.02–1.70) patterns. No significant associations emerged with “Vitamins and Fiber” (OR 0.93) and “VUFA” (OR 1.16) patterns.
Conclusions
Our findings suggest that a diet rich in animal products, including several types of meat and dairy products, as well as of (refined) cereals and sugars has an unfavorable role on prostate cancer.
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Acknowledgments
This work was supported by the Italian Association for Cancer Research (AIRC Grant Numbers 10068 and 10415) and by the Italian Ministry of University, Education and Research (PRIN 2009 X8YCBN). F.B. was supported by a fellowship of the “Fondazione Umberto Veronesi.”
Conflict of interest
The opinions expressed in this manuscript are those of the authors and do not necessarily reflect the opinions of the organization that they work for. The authors declare that they have no conflict of interest.
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Rosato, V., Edefonti, V., Bravi, F. et al. Nutrient-based dietary patterns and prostate cancer risk: a case–control study from Italy. Cancer Causes Control 25, 525–532 (2014). https://doi.org/10.1007/s10552-014-0356-8
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DOI: https://doi.org/10.1007/s10552-014-0356-8