Cohort studycited by the Tayebat archiveabstract only checked A-CHK-10 standard review

Meat, cooking mutagens and colorectal cancer

A large prospective study of meat consumption and colorectal cancer risk: an investigation of potential mechanisms underlying this association.

Overview

Cross AJ et al.. Cancer Res 2010 · PMID 20215514 · DOI 10.1158/0008-5472.CAN-09-3929

Red and processed meat and some cooking mutagens were linked to colorectal cancer.

Does the study support the specific claim? Partly · Methodological quality: moderate

Study explained simply

What did the researchers want to find out?: Which mechanisms explain the meat-colorectal cancer association?
How was the study done?: Prospective cohort (NIH-AARP) with meat type, cooking and mutagen databases
How many people, animals or samples were studied?: 300,948 participants; 2,719 cases; US adults
What was actually found?: Red meat HR 1.24 (1.09-1.42); processed meat HR 1.16 (1.01-1.32); MeIQx HR 1.19 (1.05-1.34); DiMeIQx HR 1.17 (1.05-1.29); heme HR 1.13 (0.99-1.29).
How large was the observed effect?: Cox HR Q5 vs Q1
What do the results mean in everyday life?: Concerns high-heat cooking of meat generally.
What are the study's limitations?: Self-reported cooking; database estimates; Red/processed meat, not poultry
What does it say about Elawady's specific claim?: Indirect.
Do the results apply to Germany and Europe?: Moderate.
What can explicitly not be concluded from this study?: Cannot show chicken risk.

Authors: Cross AJ, Ferrucci LM, Risch A, Graubard BI, Ward MH, Park Y, Hollenbeck AR, Schatzkin A, Sinha R
Journal: Cancer Res
Year: 2010
Identifier: PMID 20215514 DOI 10.1158/0008-5472.CAN-09-3929 · PMC2840051
Verification: verified – PubMed E-utilities efetch, 2026-10-25
Retracted: no
Corrections: none
Extent checked: abstract only
Conflicts of interest and funding: No COI statement; NIH intramural

Which mechanisms explain the meat-colorectal cancer association?

Study design: Cohort study – Prospective cohort (NIH-AARP) with meat type, cooking and mutagen databases
Population: US adults
Country: USA
Period: 7-year follow-up
Sample size: 300,948 participants; 2,719 cases
Inclusion and exclusion criteria: Cohort with detailed meat questionnaire

Results: Red meat HR 1.24 (1.09-1.42); processed meat HR 1.16 (1.01-1.32); MeIQx HR 1.19 (1.05-1.34); DiMeIQx HR 1.17 (1.05-1.29); heme HR 1.13 (0.99-1.29).
Absolute risks: not reported
Authors' conclusion: Heme iron, nitrate/nitrite and HCAs may explain associations.

Modest HRs.

Poultry not the exposure.

Moderate.

Relevant to HCAs, not chicken.

Multidimensional assessment
Multidimensional assessment
Authenticity of the source	verified
Methodological quality	moderate
Risk of bias	some concerns
Precision of results	moderate
Directness	indirect
Reproducibility	partly replicated
Consistency with the overall evidence	mixed
Regional transferability	moderate
Adequacy of the interpretation (by the archive)	taken out of context

None.

Note: according to the archive, the studies were compiled by the archive operators. Whether Dr. Elawady himself cited this study is not established.

What the archive says about the study: Listed in bibliography (no interpretation).
A. What was actually studied?: Red/processed meat and CRC mechanisms.
B. What did the authors find?: Associations for red/processed meat and HCAs.
C. What conclusions do the authors themselves draw?: Mechanisms may include HCAs.
D. What does the archive derive from it?: Implicitly used against chicken.
E. Is this derivation scientifically justified?: Out of context: study is about red/processed meat; supports HCA concern generally.
Adequacy of the interpretation (by the archive): taken out of context