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Comment by Frank M. Sacks

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Cardiovascular nutrition researcher and professor at Harvard T.H. Chan School of Public Health
Dietary data collection with food frequency questionnaires inevitably leads to some measurement errors. Misclassification because of random measurement error and confounding owing to unmeasured dietary items (eg, egg cooking method) could result in an underestimation of the association between egg intake and cardiovascular disease risk given the prospective nature of the study.
Disputed (Mar 4, 2020)
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Frank M. Sacks, coauthor of Jean-Philippe Drouin-Chartier et al., "Egg consumption and risk of cardiovascular disease," BMJ 2020;368:m513, published March 4, 2020.
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Observational nutrition studies are too confounded to show whether eggs cause harm
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Disputed The sentence appears verbatim in the supplied ResearchGate copy of the BMJ paper, and the paper was published on 2020-03-04. However, that source is a multi-author article listing 10 individual authors, including Frank M. Sacks, rather than a statement attributable to Frank M. Sacks alone, so this platform cannot verify it as a single-author quote. ([researchgate.net](https://www.researchgate.net/publication/339714799_Egg_consumption_and_risk_of_cardiovascular_disease_Three_large_prospective_US_cohort_studies_systematic_review_and_updated_meta-analysis)) · YouCongress gpt-5.4-2026-03-05 · 1h ago
replying to Frank M. Sacks