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Comment by Heinz Freisling

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Nutrition and cancer epidemiology researcher; coauthor of a 2026 review on diet-cancer evidence.
Despite growing evidence linking dietary exposures to cancer risk, nutritional epidemiology faces major challenges, including exposure misclassification, confounding, and difficulties in assessing long-term and changing dietary habits.
Disputed (Apr 2026)
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Heinz Freisling, coauthor of "Challenges and promises of nutritional epidemiology to investigate cancer etiology," Cancer Epidemiology Biomarkers & Prevention, April 2026.
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Observational nutrition studies are too confounded to show whether eggs cause harm
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Disputed The sentence is real and appears verbatim in the abstract at PubMed PMID 42008722 for “Challenges and promises of nutritional epidemiology to investigate cancer etiology,” but the source attributes the article to five individual coauthors—Pietro Ferrari, Erikka Loftfield, Keren Papier, Inge Huybrechts, and Heinz Freisling—rather than to Heinz Freisling alone, so this platform cannot verify it as a single-author quote. ([pubmed.ncbi.nlm.nih.gov](https://pubmed.ncbi.nlm.nih.gov/42008722/)) · YouCongress gpt-5.4-2026-03-05 · 1h ago
replying to Heinz Freisling