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Nutritional factors and colon cancer
1Division of Nutritional Carcinogenesis, American Health Foundation, Valhalla, New York 10595, USA.
Critical Reviews in Food Science and Nutrition
|January 1, 1995
Summary
High dietary fat intake increases colon cancer risk, while increased fiber intake may reduce it. These findings are supported by epidemiological and animal studies, highlighting diet
Area of Science:
- Nutritional Epidemiology
- Gastrointestinal Oncology
Background:
- Understanding the link between diet and colon cancer has advanced significantly over the past two decades.
- Nutritional epidemiology faces challenges in precise exposure assessment, leading to inconsistencies in study findings.
- Methodological improvements have addressed prior deficiencies in diet and cancer research.
Purpose of the Study:
- To synthesize current understanding of dietary factors influencing colon cancer development.
- To evaluate the role of dietary fat and fiber in colon cancer etiology.
- To reconcile findings from international correlation and case-control studies.
Main Methods:
- Review of recent case-control studies on diet and colon cancer.
- Analysis of international correlation studies.
- Examination of laboratory-animal model studies on dietary lipids and fibers.
- Metabolic epidemiological data evaluation.
Main Results:
- High dietary fat intake is identified as a significant risk factor for colon cancer.
- Increased consumption of high-fiber foods may decrease the risk of colon cancer.
- Specific dietary lipids can enhance, while certain fibers can protect against, colon tumorigenesis in animal models.
Conclusions:
- Dietary fat and fiber play crucial roles in colon cancer development.
- Epidemiological and laboratory data provide convincing evidence for the influence of dietary components on colon cancer.
- Future research should continue to refine dietary exposure assessments for more accurate risk estimations.