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Related Experiment Videos

Meat and colo-rectal cancer.

M J Hill1

  • 1Lady Sobell Gastrointestinal Unit, Wexham Park Hospital, Slough, UK.

The Proceedings of the Nutrition Society
|August 31, 1999
PubMed
Summary

Early research linked red meat to colorectal cancer, but newer studies show no connection. Diet factors like vegetables and whole grains appear more crucial for reducing cancer risk.

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Area of Science:

  • Epidemiology
  • Oncology
  • Nutritional Science

Background:

  • Early epidemiological studies investigated diet and cancer, focusing on causal factors.
  • Population studies suggested a correlation between red meat intake and colorectal cancer risk.
  • Meat intake was also inversely correlated with stomach, esophageal, and liver cancers.

Purpose of the Study:

  • To review the epidemiological evidence on the relationship between meat intake and cancer risk.
  • To evaluate the consistency of findings across different study designs (ecological, case-control, cohort).
  • To identify key dietary determinants of colorectal cancer risk.

Main Methods:

  • Review of early and recent epidemiological studies, including ecological, case-control, and cohort designs.
  • Analysis of reported correlations between meat consumption and various cancer types.
  • Assessment of evidence for protective dietary factors.

Main Results:

  • Early ecological studies indicated a positive association between red meat and colorectal cancer.
  • Case-control studies initially supported this link, but recent European studies showed no relationship.
  • Cohort studies generally did not find a significant association between meat intake and colorectal cancer risk.

Conclusions:

  • The available evidence suggests that meat intake is not a primary determinant of colorectal cancer risk.
  • Protective dietary factors, such as vegetables and whole-grain cereals, are more significant in determining colorectal cancer risk.
  • The relationship between meat and certain cancers may be coincidental rather than causal.

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