The diet-microbiota-inflammation axis and colorectal cancer
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By
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Konstantinos Kossenas
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Christos Damaskos
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Nikolaos Garmpis
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July 15, 2026
Clinical Scorecard: The Relationship Between Diet, Gut Microbiota, Inflammation, and Colorectal Cancer
At a Glance
| Category | Detail |
|---|
| Condition | Colorectal Cancer (CRC) |
| Key Mechanisms | Diet, gut microbiota, microbial metabolites, chronic inflammation |
| Target Population | Individuals at risk for colorectal cancer |
| Care Setting | Clinical and research settings focusing on cancer prevention and management |
Key Highlights
- Dietary patterns significantly impact gut microbiota composition and function.
- Rich-fiber diets and SCFAs are protective against CRC.
- Western dietary patterns and dysbiosis promote a pro-inflammatory environment.
- Specific microorganisms are associated with CRC through inflammatory and immune-modulatory mechanisms.
- Microbiota-targeted interventions show promise in preclinical and early clinical studies.
Guideline-Based Recommendations
Diagnosis
- Consider microbiome-derived biomarkers for CRC diagnosis.
Management
- Implement microbiota-targeted therapies such as probiotics and prebiotics.
Monitoring & Follow-up
- Monitor dietary patterns and gut microbiota composition in at-risk populations.
Risks
- High intake of red and processed meat and ultra-processed foods increases CRC risk.
Patient & Prescribing Data
Patients at risk for or diagnosed with colorectal cancer.
Microbiota-targeted therapies may enhance prevention and management strategies.
Clinical Best Practices
- Encourage a diet rich in fiber, fruits, and vegetables for CRC prevention.
- Assess gut microbiota composition in patients for personalized management.
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