Assessing the role of ultra-processed foods in colorectal cancer incidence: insights from the EPIC cohort
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Background
Studies have reported associations between ultra-processed food (UPF) consumption and colorectal cancer (CRC) incidence, yet the magnitude of these associations remains unclear. This study estimated the cohort-associated fraction (CAF), adapted from the population-attributable fraction metric, between UPF consumption and CRC incidence and explored the potential benefits of substituting UPFs with unprocessed or minimally processed foods.
Methods
Using data from 416,081 middle-aged adults in the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort, including 5,845 incident CRC cases, Cox proportional hazards models were applied to estimate associations between UPF consumption (grams/day) and CRC, colon and rectal cancer risks. Substitution analyses were also carried out to estimate associations of replacing UPFs with unprocessed or minimally processed foods, to reflect potentially more interpretable estimates. CAFs quantified the magnitude of these associations.
Results
UPF consumption was positively associated with colon cancer (HR1-SD Increment: 1.04 [95%CI: 1.01; 1.08]) and CRC (HR1-SD Increment: 1.04 [95%CI: 1.01; 1.07]) but not with rectal cancer incidence. The CAF for UPF consumption was 5.58% (95%CI: 0.55; 10.50) for colon, and 5.10% (1.10; 9.02) for CRC incidence. Substituting 1-SD of UPFs with unprocessed or minimally processed foods was inversely associated with colon cancer (HR: 0.93, [95%CI: 0.89; 0.97]) and CRC incidence (HR: 0.94, [95%CI: 0.92; 0.98]), in energy- and nutrient-adjusted models. In substitution models, the CAF increased to 9.67% (4.36; 14.85) for colon cancer and 7.30% (3.05; 11.48) for CRC incidence.
Conclusion
We estimated the magnitude of associations between UPF consumption and CRC incidence, highlighting the potential public health relevance of reducing UPF intake. Given the rising consumption of UPFs and burden of CRC incidence, public health interventions and continued research are needed to address this growing issue.
Studies have reported associations between ultra-processed food (UPF) consumption and colorectal cancer (CRC) incidence, yet the magnitude of these associations remains unclear. This study estimated the cohort-associated fraction (CAF), adapted from the population-attributable fraction metric, between UPF consumption and CRC incidence and explored the potential benefits of substituting UPFs with unprocessed or minimally processed foods.
Methods
Using data from 416,081 middle-aged adults in the European Prospective Investigation into Cancer and Nutrition (EPIC) cohort, including 5,845 incident CRC cases, Cox proportional hazards models were applied to estimate associations between UPF consumption (grams/day) and CRC, colon and rectal cancer risks. Substitution analyses were also carried out to estimate associations of replacing UPFs with unprocessed or minimally processed foods, to reflect potentially more interpretable estimates. CAFs quantified the magnitude of these associations.
Results
UPF consumption was positively associated with colon cancer (HR1-SD Increment: 1.04 [95%CI: 1.01; 1.08]) and CRC (HR1-SD Increment: 1.04 [95%CI: 1.01; 1.07]) but not with rectal cancer incidence. The CAF for UPF consumption was 5.58% (95%CI: 0.55; 10.50) for colon, and 5.10% (1.10; 9.02) for CRC incidence. Substituting 1-SD of UPFs with unprocessed or minimally processed foods was inversely associated with colon cancer (HR: 0.93, [95%CI: 0.89; 0.97]) and CRC incidence (HR: 0.94, [95%CI: 0.92; 0.98]), in energy- and nutrient-adjusted models. In substitution models, the CAF increased to 9.67% (4.36; 14.85) for colon cancer and 7.30% (3.05; 11.48) for CRC incidence.
Conclusion
We estimated the magnitude of associations between UPF consumption and CRC incidence, highlighting the potential public health relevance of reducing UPF intake. Given the rising consumption of UPFs and burden of CRC incidence, public health interventions and continued research are needed to address this growing issue.
Date Issued
2026-06-04
Date Acceptance
2026-03-26
Citation
BMC Public Health, 2026, 26
ISSN
1471-2458
Publisher
BMC
Journal / Book Title
BMC Public Health
Volume
26
Copyright Statement
© The Author(s) 2026. Open Access This article is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License, which permits any non-commercial use, sharing, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if you modified the licensed material. You do not have permission under this licence to share adapted material derived from this article or parts of it. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit h t t p : / / c r e a t i v e c o m m o n s . o r g / l i c e n s e s / b y - n c - n d / 4 . 0 /
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/42021246
PII: 10.1186/s12889-026-27225-3
Subjects
Cancer epidemiology
Cohort-attributable fraction (CAF)
Colorectal cancer (CRC)
EPIC cohort
Food processing
Ultra-processed foods (UPF)
Humans
Colorectal Neoplasms
Female
Incidence
Middle Aged
Male
Food, Processed
Prospective Studies
Europe
Fast Foods
Proportional Hazards Models
Adult
Cohort Studies
Risk Factors
Publication Status
Published
Coverage Spatial
England
Article Number
1800
Date Publish Online
2026-04-22