title: Dietary patterns and colorectal cancer risk: a meta-analysis.
abstract: The analysis of dietary patterns has recently drawn considerable attention as a method of investigating the association between the overall whole diet and the risk of colorectal cancer. However, the results have yielded conflicting findings. Here, we carried out a meta-analysis to identify the association between dietary patterns and the risk of colorectal cancer. A total of 40 studies fulfilled the inclusion criteria and were included in this meta-analysis. The highest category of 'healthy' dietary pattern compared with the lowest category was apparently associated with a decreased risk for colorectal cancer [odds ratio (OR)=0.75; confidence interval (CI): 0.68-0.83; P<0.00001]. An increased risk of colorectal cancer was shown for the highest compared with the lowest category of a 'western-style' dietary pattern (OR=1.40; CI: 1.26-1.56; P<0.00001). There was an increased risk of colorectal cancer in the highest compared with the lowest category of 'alcohol-consumption' pattern (OR=1.44; CI: 1.13-1.82; P=0.003). The results of this meta-analysis indicate that a 'healthy' dietary pattern may decrease the risk of colorectal cancer, whereas 'western-style' and 'alcohol-consumption' patterns may increase the risk of colorectal cancer.
authors.affiliation: Departments of aNutrition bDigestion, Zhejiang Hospital, Hangzhou, Zhejiang, China.
authors.forename: Yu-Liang
authors.initials: YL
authors.lastname: Feng
authors.forename: Long
authors.initials: L
authors.lastname: Shu
authors.forename: Pei-Fen
authors.initials: PF
authors.lastname: Zheng
authors.forename: Xiao-Yan
authors.initials: XY
authors.lastname: Zhang
authors.forename: Cai-Juan
authors.initials: CJ
authors.lastname: Si
authors.forename: Xiao-Long
authors.initials: XL
authors.lastname: Yu
authors.forename: Wei
authors.initials: W
authors.lastname: Gao
authors.forename: Lun
authors.initials: L
authors.lastname: Zhang
mesh_terms: D000428:Alcohol Drinking / Q000009:adverse effects* / Q000453:epidemiology; D015179:Colorectal Neoplasms / Q000175:diagnosis / Q000453:epidemiology* / Q000517:prevention & control*; D004032:Diet / Q000009:adverse effects; D000072001:Diet, Healthy / Q000639:trends*; D066273:Diet, Western / Q000009:adverse effects*; D005247:Feeding Behavior / Q000502:physiology; D006801:Humans; D012307:Risk Factors