Systematic review2025Open access

Associations between the consumption of red meat and processed meat and the incidence of colorectal cancer in Asia: a meta-analysis

Liao Z, Wu W, Xia S, Yu L, Xu Z, Li Y

Frontiers in medicine · 1 citation

How it was studied

Design
Systematic review (indexed by PubMed)
Studied in
People
Main outcome
Clinical events such as disease or death
Intake measured by
Not stated

Who paid for it

Funding
Independent funding

Based on full-text disclosure statement.

Publication

Published
2025-06-09 · Front Med (Lausanne) · vol. 12 · p. 1555717
Publisher
Frontiers Media
Cited
1 citation · more than 74% of similar papers · 0.9× the field average
References
15 works
Access
Open access (journal) · CC-BY
Research areas
Nutritional Studies and Diet
Keywords
Colorectal cancer, Incidence (geometry), Red meat, Processed meat, Meta-analysis, Consumption (sociology), Medicine, Environmental health, Cancer, Internal medicine, Food science, Biology, Pathology, Sociology, Social science

6 authors

From CN

  • Zhiyuan LiaoGuangzhou University of Chinese Medicine
  • Wenjiang WuGuangzhou University of Chinese Medicine
  • Shijun Xia · correspondingGuangzhou University of Chinese Medicine
  • Linchong YuGuangzhou University of Chinese Medicine
  • Zhigang XuGuangzhou University of Chinese Medicine
  • Yue LiGuangzhou University of Chinese Medicine

Abstract

Objective

This study aimed to evaluate the correlation between the consumption of red meat and processed meat and the incidence of colorectal cancer (CRC) in Asia and provide a scientific basis for reducing the incidence of CRC.

Methods

PubMed, Embase, Cochrane Library, and other databases were searched electronically to collect studies on the correlation between the consumption of red meat and processed meat and the incidence of CRC in Asia. After the quality evaluation of the Newcastle-Ottawa scale, meta-analyses of the selected studies were performed using RevMan 5.4.1. The odds ratio (OR) and 95% confidence interval (95% CI) were combined, and the heterogeneity among the included studies was analyzed via sensitivity analysis. I 2 was used to evaluate the heterogeneity among the included studies.

Results

Twelve articles were included, which involved 13,292 and 12,544 cases in the case and control groups, respectively. The results of the meta-analysis revealed that in the study of the correlation between the consumption of red meat and the incidence of colon cancer, the combined OR was 2.14 (P P = 0.006); that for the consumption of red meat and the incidence of rectal cancer, the OR was 2.42 (P = 0.0009); and that for the consumption of processed meat and the incidence of CRC, the combined OR was 1.51 (P > 0.05).

Conclusion

The results suggest that red meat is a risk factor for the incidence of colon, colorectal, and rectal cancers. However, no significant correlation was found between the consumption of processed meat and the incidence of CRC.

Abstract via Europe PMC. Copyright remains with the authors or publisher (CC BY).

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