Author
Listed:
- Shu-bo Tian
- Jian-chun Yu
- Wei-ming Kang
- Zhi-qiang Ma
- Xin Ye
- Zhan-jiang Cao
Abstract
Purpose: Observational studies have given inconsistent findings on the relationship between intake of dairy products and gastric cancer. We therefore conducted a systematic review with a meta-analysis of observational studies to summarize available evidence on this point. Methods: We searched the electronic literature databases of PubMed (Medline), EMBASE and the Chinese Biomedical Literature Database up until August 30, 2013. All studies were limited to the English language. Random-effects models were used to pool study results between dairy products consumption and the risk of gastric cancer. We also performed subgroup, publication bias and sensitivity analysis. Results: Eight prospective studies and 18 case-control studies were included in our analysis, with a total number of 7272 gastric cancer cases and 223,355 controls. Pooled relative risks of all studies showed no significant association between dairy intake and gastric cancer (odds ratio [OR]: 1.09, 95% confidence interval [CI]: 0.96–1.25). When study design was separately analyzed, population-based case-control studies showed a positive association between dairy intake and gastric cancer risk (OR: 1.36; 95% CI: 1.07–1.74), whereas no associations were shown by hospital-based case-control studies (OR: 0.86, 95% CI: 0.72–1.02) or cohort studies (OR = 1.01, 95% CI = 0.91–1.13). Conclusions: The meta-analysis shows that no clear association apparently exists between consumption of dairy products and gastric cancer risk. Further well-designed cohort and intervention studies should be conducted to verify this lack of association.
Suggested Citation
Shu-bo Tian & Jian-chun Yu & Wei-ming Kang & Zhi-qiang Ma & Xin Ye & Zhan-jiang Cao, 2014.
"Association between Dairy Intake and Gastric Cancer: A Meta-Analysis of Observational Studies,"
PLOS ONE, Public Library of Science, vol. 9(7), pages 1-11, July.
Handle:
RePEc:plo:pone00:0101728
DOI: 10.1371/journal.pone.0101728
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