Nezam El-Tayebat Fact CheckA scientific assessment of the “نظام الطيبات” nutrition system
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Mostly false Overinterpreted Certainty of evidence: low provisional C-EGG-04

Higher egg (and dietary cholesterol) intake increases the risk of cardiovascular disease and all-cause mortality (each additional half egg per day: +6% CVD, +8% mortality).

In short: The JAMA 2019 numbers are cited correctly, but the claim is mostly false as a general statement: across millions of participants, moderate egg intake is not consistently linked to heart disease or death; a small association appears mainly in US studies and not in Asian or Middle Eastern populations.
Conclusion: Moderate egg intake is not consistently linked to more heart disease or deaths; a small association appears mainly in US studies, so the archive's single US study does not represent the overall or regional evidence.
  1. Original statement
  2. Scientific assessment
  3. Scientific evidence in detail
  4. In plain language
  5. Studies on this claim
  6. Regional context
  7. What applies in my country?
  8. References

Original statement

في JAMA 2019 ارتبط كل نصف بيضة إضافية يومياً بزيادة 6% في أمراض القلب و8% في الوفيات الكلية على 29615 شخصاً

verbatim according to source. Translation by the project; the Arabic wording is authoritative.

Translation

Higher egg (and dietary cholesterol) intake increases the risk of cardiovascular disease and all-cause mortality (each additional half egg per day: +6% CVD, +8% mortality).

Origin

Source status
Archive editors
Attribution
Archive editors (not Elawady)
Origin
https://eltayebat.com/rule/industrial-eggs/
Attribution uncertainty
Narrative and study selection written by the archive operators; the archive states the forbidden section is documented independently of Dr. Diaa's words.
Claimed mechanism

Dietary cholesterol from eggs (and, per the archive, TMAO formation, see C-EGG-05).

Claimed health effect

Cardiovascular disease, all-cause mortality.

Population concerned

Adults (US cohorts in the cited study)

Geographic restriction by Elawady

none found

Scientific assessment

Mostly false – Essential parts of the statement are not supported by the evidence or are strongly exaggerated.

Certainty of evidence: low – Further research is likely to change the assessment considerably.

1. What was claimed?

The archive presents the JAMA 2019 pooled US analysis as epidemiological evidence that eggs raise cardiovascular disease and mortality risk.

2. What is demonstrably correct?

The JAMA 2019 study (A-EGG-12) reported exactly these associations (HR 1.06 for CVD and 1.08 for mortality per half egg/day), and the archive reproduces them correctly. The largest updated meta-analysis (Zhao 2022, I-EGG-109) also found a small positive association (RR 1.04 per egg/day), concentrated in US cohorts. Randomised trials show that more dietary cholesterol modestly raises LDL cholesterol (about 1.9-4.6 mg/dL per extra 100 mg/day, I-EGG-07).

3. What is wrong or exaggerated?

The archive omits that in the same JAMA study the egg association disappeared after adjustment for dietary cholesterol, and that larger bodies of evidence disagree: the 2020 BMJ meta-analysis (1.7 million participants) found RR 0.98 (0.93-1.03) per egg/day; PURE (about 177,000 people, 50 countries) found no association of >=7 vs <1 egg/week with CVD or mortality; a meta-analysis of 33 cohorts found no association with all-cause or CVD mortality; Chinese data (0.5 million adults) showed lower CVD risk with daily egg intake. Relative risks of 6-8% correspond to small absolute differences (1.11% and 1.93% absolute risk differences over follow-up in JAMA 2019).

4. What remains unclear?

Effects of high intakes (>1 egg/day), effects in people with type 2 diabetes (possible higher risk in a pooled analysis, I-EGG-01), a possible signal for heart failure (I-EGG-04) and for cancer mortality (I-EGG-05) remain uncertain; observational studies cannot fully separate eggs from accompanying foods (e.g., processed meat in breakfasts).

5. Which studies support it?

A-EGG-12 (pooled US cohorts, correctly cited); I-EGG-109 (largest updated meta-analysis, 3.6 million participants: CVD RR 1.04, 1.00-1.08 per egg/day; US 1.08, 1.02-1.14; Asia 0.96, 0.87-1.06); I-EGG-112 (all-cause mortality RR 1.06 per egg/day, restricted to women, Americans and some subgroups); I-EGG-07 (LDL rise in RCTs); I-EGG-06 (AHA on LDL).

6. Which studies contradict it?

I-EGG-01, I-EGG-02, I-EGG-03, I-EGG-05; I-EGG-110 (>1 egg/day vs <=1: CVD HR 0.99, 0.93-1.06, 1.4 million people); I-EGG-111 (Isfahan cohort, Iran: >=3 eggs/week vs <1, CVD HR 1.05, 0.79-1.40); I-EGG-04 (mixed: inverse for CVD at moderate intake, positive for heart failure). These meta-analyses overlap heavily in their cohorts and are not independent confirmations.

7. What applies to Germany and Europe?

European cohorts in the BMJ 2020 meta-analysis showed no association (RR 1.05, 0.92-1.19). The AHA (US) no longer sets a numeric cholesterol limit but recommends dietary patterns naturally low in cholesterol. [The German DGE position was not fetched for this review.]

8. What is known about Egypt?

No Egyptian cohort data were found. A 12-year Iranian cohort (I-EGG-111) and the multinational PURE study, including middle-income countries (I-EGG-02), show no increased risk at moderate intake; Asian cohorts in Zhao 2022 show no association (RR 0.96).

9. What practical conclusion is appropriate?

For most healthy adults, up to about one egg a day within a healthy diet is not associated with higher cardiovascular risk. People with high LDL or diabetes should follow individual medical advice.

Assessment details

Rationale for certainty of evidence

All evidence on hard outcomes is observational (GRADE starts at low). Several large dose-response meta-analyses (partly overlapping in primary studies) and the multinational PURE study show no association of moderate intake (up to about 1 egg/day) with CVD or mortality, while one pooled US analysis (the archive's study) showed a positive association. RCTs show that dietary cholesterol modestly raises LDL. The overall direction is consistent enough to call the general claim mostly false, but certainty remains low.

Source quality

Archive editorial; cites a real, correctly summarised, high-profile study (A-EGG-12), but selects it from a larger and largely contradictory body of evidence.

Regional transferability

The positive associations are mainly seen in US cohorts; European cohorts show no association and Asian cohorts an inverse association (I-EGG-01).

Individual exceptions

People with type 2 diabetes, familial hypercholesterolaemia or high LDL may be advised by their doctors to limit dietary cholesterol. In people with type 2 diabetes, a meta-analysis found a possible higher cardiovascular risk (RR 1.25, 0.99-1.59 per egg/day; 1.40, 1.00-1.97 for high vs low intake, with considerable heterogeneity), although the US cohorts in the same paper showed no association in this group (HR 1.06) (I-EGG-01). One meta-analysis suggested higher heart failure risk at 1 egg/day or more (low certainty).

Regional scope of the claim
general (biological/medical)
Last reviewed
26 October 2026 provisional

Scientific evidence in detail

Overinterpreted – A real finding exists, but the claim draws more from it than the data allow (e.g. association taken as cause, animal data applied to humans, small effect presented as large).

Research question: In adults, is higher egg (and dietary cholesterol) intake associated with, or a cause of, higher cardiovascular disease and all-cause mortality, as reported in JAMA 2019 (+6% CVD, +8% mortality per half egg/day)?

Research question in detail (PECO)
Population
Adults without CVD at baseline (US, European, Asian and Middle Eastern cohorts)
Intervention or exposure
Higher egg / dietary cholesterol intake
Comparison
Lower intake
Geographic scope
population-dependent (strong regional heterogeneity: US vs Europe vs Asia/Middle East)
Outcomes
  • incident CVD
  • CVD mortality
  • all-cause mortality
  • LDL cholesterol (surrogate)

Study results as reported by the authors. Our assessment follows below.

What speaks for the claim?

  • Large review links eggs to slightly higher heart risk, mainly in the USA

    Zhao B et al.. Circulation 2022 · PMID 35360933 · DOI 10.1161/CIRCULATIONAHA.121.057642 Meta-analysisfull text checkednewly added

    Largest updated meta-analysis (3.6 million participants) plus a 31-year Finnish cohort: a small positive egg-CVD association, confined to US (and borderline European) cohorts.

    Actual result
    Per 50 g egg/day CVD RR 1.04 (1.00-1.08), I2 80.1%; US 1.08 (1.02-1.14); Europe 1.05 (0.98-1.14); Asia 0.96 (0.87-1.06).
    Methodological quality
    moderate (large meta-analysis of cohorts; high heterogeneity)
    Relevance
    direct
    Limitations
    Observational; heterogeneity by region; cohort in male smokers.

    Original publication

  • Eggs, cholesterol and heart disease in six US cohorts

    Zhong VW et al.. JAMA 2019 · PMID 30874756 · DOI 10.1001/jama.2019.1572 Cohort studyabstract checked

    Pooled US cohorts (JAMA 2019), the archive's source, correctly cited by the archive.

    Actual result
    Per half egg/day CVD HR 1.06 (1.03-1.10), ARD 1.11%; mortality HR 1.08 (1.04-1.11), ARD 1.93%; not significant after adjustment for dietary cholesterol.
    Methodological quality
    moderate (pooled individual-level US cohorts)
    Relevance
    direct
    Limitations
    US only; single dietary assessment.

    Original publication

  • Dietary cholesterol and LDL

    Vincent MJ et al.. Am J Clin Nutr 2019 · PMID 30596814 · DOI 10.1093/ajcn/nqy273 Meta-analysisabstract checked

    Meta-regression of controlled feeding trials: dietary cholesterol raises LDL modestly.

    Actual result
    +1.90 to +4.58 mg/dL LDL per 100 mg/day cholesterol.
    Methodological quality
    high for the surrogate (RCTs)
    Relevance
    indirect (surrogate)
    Limitations
    No hard outcomes.

    Original publication

What speaks against the claim?

  • Eggs and heart disease: 1.7 million people

    Drouin-Chartier JP et al.. BMJ 2020 · PMID 32132002 · DOI 10.1136/bmj.m513 Meta-analysisfull text, structured risk-of-bias assessment

    Three large US cohorts and updated meta-analysis (BMJ 2020): no association up to 1 egg/day.

    Actual result
    Meta-analysis RR 0.98 (0.93-1.03) per egg/day; Europe RR 1.05 (0.92-1.19); cohorts >=1 egg/day HR 0.93 (0.82-1.05).
    Methodological quality
    moderate
    Relevance
    direct
    Limitations
    Observational.

    Original publication

  • Eggs, cholesterol and heart disease in 50 countries

    Dehghan M et al.. Am J Clin Nutr 2020 · PMID 31965140 · DOI 10.1093/ajcn/nqz348 Cohort studyabstract checked

    PURE (177,000 people, 50 countries incl. middle-income): no association of >=7 vs <1 egg/week with CVD or mortality.

    Actual result
    Composite HR 0.96 (0.89-1.04); mortality 1.04 (0.94-1.15).
    Methodological quality
    moderate (large multinational cohort)
    Relevance
    direct and regionally broad
    Limitations
    Observational; FFQ.

    Original publication

  • Iranian study: eggs not linked to heart disease

    Mohammadifard N et al.. Eur J Clin Nutr 2022 · PMID 35347253 · DOI 10.1038/s41430-022-01118-1 Cohort studyabstract checkednewly added

    Isfahan Cohort (Iran, 12 years): no association of >=3 eggs/week with CVD.

    Actual result
    CVD HR 1.05 (0.79-1.40); MI 1.44 (0.86-2.41).
    Methodological quality
    moderate (regional cohort, imprecise)
    Relevance
    direct, Middle Eastern population
    Limitations
    Wide CIs.

    Original publication

What does the overall evidence say?

Editorial assessment based on the studies above – not itself a study result.

Which position is better supported?

Moderate egg intake (up to about one egg a day) is not consistently associated with CVD or mortality. A small positive association is seen in US cohorts and in the largest meta-analysis (RR 1.04 per egg/day), but not in Asian or Middle Eastern cohorts. Dietary cholesterol modestly raises LDL in trials.

Why some studies weigh more

Large meta-analyses overlap heavily (Drouin-Chartier, Godos, Mousavi, Ma, Zhao, Krittanawong share many cohorts), so they are not independent confirmations. Regional subgroup patterns are consistent across syntheses and are given weight. RCT evidence on LDL supports biological plausibility but has no hard outcomes.

Is a causal relationship established? Possible, not established A small causal effect at high intakes is biologically plausible via LDL, but cohort associations are small, inconsistent across regions and sensitive to adjustment (the JAMA 2019 egg association disappeared after adjustment for dietary cholesterol).

Remaining uncertainty

Effects of >1 egg/day, in people with type 2 diabetes, and why US cohorts differ (accompanying foods such as processed meat, cooking fat).

Justified conclusion

The archive correctly reproduces the JAMA 2019 numbers but presents a small, US-specific association as a general risk while omitting the larger, partly contradictory evidence.

Why do studies seem to disagree?

Zhao 2022 and Ma 2022 report small positive pooled associations; Drouin-Chartier 2020, Krittanawong 2021, Mousavi 2022, PURE and the Isfahan cohort report none. The disagreement is mainly explained by region (US vs Asia), intake range, adjustment for dietary cholesterol/hyperlipidaemia, and model choice; they largely answer the same question with different weighting of the same cohorts. Recomputed US vs Asia difference z = 2.04, p = 0.04.

Does this depend on the country?
General biological effects
Dietary cholesterol raises LDL modestly in most people (RCTs).
Eating habits
In the US eggs are often eaten with processed meat and refined bread; this may explain regional differences.
Origin of the food
Not relevant.
Contaminants
Not relevant.
National production conditions
Not relevant.
Legal rules
AHA no longer sets a numeric cholesterol limit (I-EGG-06).
Actual monitoring data
No Egyptian cohort; Iranian (Isfahan) and multinational PURE data show no association.

A regional difference is supported by robust data.

Statistical re-check
  • CI log-symmetry and US vs Asia heterogeneity – All CIs log-symmetric within rounding; US vs Asia z = 2.04, p = 0.042 (paper: P-interaction 0.02 across three regions). recalculated
  • Relative vs absolute risk – HR 1.06 per half egg/day corresponds to an absolute risk difference of 1.11 percentage points over follow-up (about 1 extra case per 90 people, if causal); log-linear extrapolation to 1 egg/day gives HR about 1.12. recalculated
  • CI plausibility – CVD HR 0.99 (0.93-1.06) log-symmetric; inverse CAD estimate (0.89, I2 0%) should not be over-read. recalculated
Certainty of the overall evidence (GRADE, simplified)
Main outcome
CVD and all-cause mortality with higher egg intake
Starting level
low (observational studies)
Reasons for downgrading
  • inconsistency (I2 80%, regional heterogeneity)
Result
low

Simplified assessment by a single reviewer, following the GRADE approach; not a formal GRADE panel. GRADE rates the body of evidence for one outcome, not individual studies.

Clinical guidelines and official statements checked
  • AHA: Dietary Cholesterol and Cardiovascular Risk: Science Advisory (I-EGG-06) (2020) · Original publication could not be retrieved; content not used
Search strategy

Documented literature searches for this review (search strings in the original database syntax).

DatabaseDateSearchLooking forHitsIncluded
PubMed26 October 2026(egg[ti] OR eggs[ti] OR "dietary cholesterol"[ti]) AND (cardiovascular[ti] OR mortality[ti] OR "coronary"[ti]) AND (meta-analysis[pt] OR systematic review[pt]) AND 2020:2026[dp]both directions10
Europe PMC26 October 2026TITLE:(egg*) AND (TITLE:"cardiovascular" OR TITLE:"mortality") AND (TITLE:"increased risk" OR TITLE:"higher risk" OR TITLE:"positive association" OR TITLE:"harmful") AND PUB_YEAR:[2019 TO 2026]supporting evidence1
Europe PMC26 October 2026TITLE:(egg*) AND (Egypt* OR Iran* OR Arab* OR "Middle East" OR Tehran OR Saudi) AND (cardiovascular OR "coronary" OR "metabolic syndrome" OR diabetes OR mortality) AND (cohort OR prospective)both directions77
Europe PMC26 October 2026TITLE:(egg*) AND (TITLE:"cardiovascular" OR TITLE:"coronary" OR TITLE:"stroke") AND (TITLE:"not associated" OR TITLE:"no association" OR TITLE:"lower risk" OR TITLE:"inverse") AND PUB_YEAR:[2018 TO 2026]contradicting evidence19
PubMed26 October 2026"Cochrane Database Syst Rev"[ta] AND (egg OR eggs OR "dietary cholesterol")both directions71

Open questions

Prospective data from Egypt; effects at >1 egg/day in people with diabetes.

How deeply was this checked?

12 linked studies: 2 checked in full text (1 of them with a structured risk-of-bias assessment), 10 on the basis of the abstract, 0 bibliographically only. No formal assessment with two independent reviewers and no independent human expert review has taken place yet.

Last scientific review: 26 October 2026

History of the verdict
  1. 25 October 2026 · Phase 1 · Initial assessment: Mostly false (low)
  2. 26 October 2026 · Phase 4 (systematic evidence review) · Re-examined with extended evidence; verdict unchanged: Mostly false (low)
    The largest updated meta-analysis (Zhao 2022) shows a small positive pooled association, which the previous review did not include; this is acknowledged and makes the wording more cautious. It does not change the overall conclusion because the association is small, confined to US (and borderline European) cohorts, absent in Asian and Middle Eastern cohorts, and the meta-analyses overlap. Certainty remains low.
    New sources: I-EGG-109 I-EGG-110 I-EGG-111 I-EGG-112

In plain language

The archive cites a real US study that linked each extra half egg per day with slightly higher heart risk. But when researchers combined many studies with almost two million people, they found no link between up to one egg a day and heart disease. A study in 50 countries found the same. Eggs do raise blood cholesterol a little in some people, so people with high cholesterol or diabetes should ask their doctor. The archive presents one study and leaves out the larger picture.

Studies on this claim

Studies supporting the claim (4)

  • Eggs, cholesterol and heart disease in six US cohorts

    Zhong VW et al.. JAMA 2019 · PMID 30874756 · DOI 10.1001/jama.2019.1572
    Cohort studycited by the Tayebat archiveabstract checked★ key study

    More eggs or dietary cholesterol were linked to slightly more heart disease and deaths; the egg link disappeared when cholesterol intake was accounted for.

    Higher egg (and dietary cholesterol) intake increases the risk of cardiovascular disease and all-cause mortality (each additional half egg per day: +6% CVD, +8%

    Does the study support the specific claim? Yes · Methodological quality: moderate · Certainty of evidence: see overall assessment of the claim

    Original publication · Scientific details

    Study explained simply
    What did the researchers want to find out?

    Are dietary cholesterol or egg consumption associated with incident CVD and all-cause mortality?

    How was the study done?

    Pooled individual-participant analysis of 6 prospective US cohorts

    How many people, animals or samples were studied?

    29,615 participants; 5,400 CVD events; 6,132 deaths; US adults (mean age 51.6; 31.1% black)

    What was actually found?

    Per 300 mg cholesterol/day: CVD HR 1.17 (1.09-1.26), ARD 3.24%; mortality HR 1.18 (1.10-1.26), ARD 4.43%. Per half egg/day: CVD HR 1.06 (1.03-1.10), ARD 1.11% (0.32-1.89); mortality HR 1.08 (1.04-1.11), ARD 1.93%. After adjustment for dietary cholesterol, egg associations were no longer significant (CVD HR 0.99, 0.93-1.05; mortality HR 1.03, 0.97-1.09).

    How large was the observed effect?

    Cox models; HR and absolute risk difference (ARD)

    What do the results mean in everyday life?

    Absolute differences were about 1-2 percentage points over 17 years.

    What are the study's limitations?

    Single baseline dietary assessment; Residual confounding; US-only

    What does it say about Elawady's specific claim?

    Supports the claim but is contradicted by larger meta-analyses.

    Do the results apply to Germany and Europe?

    Moderate; European cohorts show no association (I-EGG-01).

    What can explicitly not be concluded from this study?

    Cannot prove causation.

    Scientific details →

  • Dietary cholesterol and LDL

    Vincent MJ et al.. Am J Clin Nutr 2019 · PMID 30596814 · DOI 10.1093/ajcn/nqy273
    Meta-analysisindependent cross-checkabstract checked

    More dietary cholesterol modestly raises LDL cholesterol.

    Higher egg (and dietary cholesterol) intake increases the risk of cardiovascular disease and all-cause mortality (each additional half egg per day: +6% CVD, +8%

    Does the study support the specific claim? Partly · Methodological quality: moderate · Certainty of evidence: see overall assessment of the claim

    Original publication · Scientific details

    Study explained simply
    What did the researchers want to find out?

    Dose-response of dietary cholesterol on LDL and HDL

    How was the study done?

    Bayesian meta-regression of randomised dietary intervention trials

    How many people, animals or samples were studied?

    55 studies; 2,652 subjects; Trial participants

    What was actually found?

    +100 mg/d cholesterol: LDL +1.90 (linear), +4.46 (MM), +4.58 (Hill) mg/dL.

    How large was the observed effect?

    Linear, Michaelis-Menten, Hill models

    What do the results mean in everyday life?

    Matters most for people with high LDL.

    What are the study's limitations?

    Surrogate endpoint

    What does it say about Elawady's specific claim?

    Supports a mechanism, not outcomes.

    Do the results apply to Germany and Europe?

    High.

    What can explicitly not be concluded from this study?

    Cannot show heart disease effect.

    Scientific details →

  • Large review links eggs to slightly higher heart risk, mainly in the USA

    Zhao B et al.. Circulation 2022 · PMID 35360933 · DOI 10.1161/CIRCULATIONAHA.121.057642
    Meta-analysisindependent cross-checkfull text checked★ key study

    Each extra egg per day: 4% higher CVD risk overall (RR 1.04), 8% in US studies, none in Asian studies.

    Pooled RR 1.04 per egg/day; US 1.08; Asia 0.96 (no association).

    Does the study support the specific claim? Partly · Methodological quality: moderate · Certainty of evidence: see overall assessment of the claim

    Original publication · Scientific details

    Study explained simply
    What did the researchers want to find out?

    Combine all cohort data on eggs, cholesterol and death.

    How was the study done?

    Finnish cohort plus meta-analysis of 3.6 million people.

    How many people, animals or samples were studied?

    27,078 men; 49 estimates.

    What was actually found?

    Small positive association, strongest in US studies.

    How large was the observed effect?

    RR 1.04 (1.00-1.08) per 50 g egg/day.

    What do the results mean in everyday life?

    Very high egg intake might slightly increase heart risk in some populations; moderate intake is a small issue at most.

    What are the study's limitations?

    Observational; big differences between studies.

    What does it say about Elawady's specific claim?

    Partly supports the archive's direction but with a much smaller and region-dependent effect.

    Do the results apply to Germany and Europe?

    Borderline in Europe.

    What can explicitly not be concluded from this study?

    It cannot prove that eggs cause heart disease.

    Scientific details →

  • Eggs and death risk: small link mainly in American studies

    Ma W et al.. J Nutr 2022 · PMID 35524693 · DOI 10.1093/jn/nxac105
    Meta-analysisindependent cross-checkabstract checked

    Each extra egg per day was linked to 6% higher all-cause mortality, but only in some subgroups.

    RR 1.06 per egg/day for all-cause mortality, limited to women, Americans and some subgroups.

    Does the study support the specific claim? Partly · Methodological quality: moderate · Certainty of evidence: see overall assessment of the claim

    Original publication · Scientific details

    Study explained simply
    What did the researchers want to find out?

    Pool studies on eggs and mortality.

    How was the study done?

    Dose-response meta-analysis.

    How many people, animals or samples were studied?

    11.9 million participants.

    What was actually found?

    Small association in subgroups.

    How large was the observed effect?

    RR 1.06 (1.02-1.10) per egg/day.

    What do the results mean in everyday life?

    Very high egg intake may be linked with slightly higher mortality in US populations.

    What are the study's limitations?

    Subgroup-driven; observational.

    What does it say about Elawady's specific claim?

    Partly supports the direction, not the size or generality.

    Do the results apply to Germany and Europe?

    Uncertain.

    What can explicitly not be concluded from this study?

    It cannot prove causation.

    Scientific details →

Studies contradicting or limiting the claim (6)

  • Eggs and heart disease: 1.7 million people

    Drouin-Chartier JP et al.. BMJ 2020 · PMID 32132002 · DOI 10.1136/bmj.m513
    Meta-analysisindependent cross-checkfull text, structured risk-of-bias assessment★ key study

    Eating up to one egg a day was not linked to heart disease or stroke.

    Higher egg (and dietary cholesterol) intake increases the risk of cardiovascular disease and all-cause mortality (each additional half egg per day: +6% CVD, +8%

    Does the study support the specific claim? No · Methodological quality: high · Certainty of evidence: see overall assessment of the claim

    Original publication · Scientific details

    Study explained simply
    What did the researchers want to find out?

    Is egg intake associated with cardiovascular disease risk?

    How was the study done?

    Three prospective US cohorts (NHS, NHS II, HPFS) plus systematic review and dose-response meta-analysis of prospective cohorts (PROSPERO CRD42019129650)

    How many people, animals or samples were studied?

    215,618 cohort participants (14,806 CVD events); meta-analysis 33 estimates, 1,720,108 participants, 139,195 CVD events; US women and men free of CVD, diabetes and cancer; meta-analysis of global cohorts

    What was actually found?

    Cohorts: an egg a day or more vs <1 per month HR 0.93 (0.82-1.05). Meta-analysis per egg/day: CVD 0.98 (0.93-1.03); Asia 0.92; in people with type 2 diabetes possibly higher risk (1.25, 0.99-1.59).

    How large was the observed effect?

    Pooled Cox models; random-effects meta-analysis

    What do the results mean in everyday life?

    For most people, an egg a day is not linked to heart risk.

    What are the study's limitations?

    Observational; egg eaters had less healthy profiles (residual confounding possible); heterogeneity; few people above one egg a day; possible higher risk in type 2 diabetes is uncertain.

    What does it say about Elawady's specific claim?

    Contradicts the archive claim.

    Do the results apply to Germany and Europe?

    European cohorts: no association.

    What can explicitly not be concluded from this study?

    Cannot prove absence of any effect at high intakes or in people with type 2 diabetes.

    Scientific details →

  • Eggs, cholesterol and heart disease in 50 countries

    Dehghan M et al.. Am J Clin Nutr 2020 · PMID 31965140 · DOI 10.1093/ajcn/nqz348
    Cohort studyindependent cross-checkabstract checked★ key study

    Eating an egg a day was not linked to cholesterol levels, heart disease or death.

    Higher egg (and dietary cholesterol) intake increases the risk of cardiovascular disease and all-cause mortality (each additional half egg per day: +6% CVD, +8%

    Does the study support the specific claim? No · Methodological quality: high · Certainty of evidence: see overall assessment of the claim

    Original publication · Scientific details

    Study explained simply
    What did the researchers want to find out?

    Is egg intake associated with blood lipids, CVD and mortality across income levels?

    How was the study done?

    Prospective cohort analyses of PURE and of patients in ONTARGET/TRANSCEND trials

    How many people, animals or samples were studied?

    146,011 (PURE) + 31,544 (trials); PURE general population (21 countries) and patients with vascular disease (ONTARGET/TRANSCEND)

    What was actually found?

    PURE >=7 vs <1 egg/week: composite HR 0.96 (0.89-1.04); mortality 1.04 (0.94-1.15); major CVD 0.92 (0.83-1.01); no association with lipids. ONTARGET/TRANSCEND similar (composite 0.97, 0.76-1.25).

    How large was the observed effect?

    Cox frailty models

    What do the results mean in everyday life?

    Moderate egg intake appears neutral worldwide.

    What are the study's limitations?

    Single FFQ; Few very high consumers

    What does it say about Elawady's specific claim?

    Contradicts.

    Do the results apply to Germany and Europe?

    Includes European countries.

    What can explicitly not be concluded from this study?

    Cannot exclude small effects.

    Scientific details →

  • Eggs and heart disease in 0.5 million Chinese adults

    Qin C et al.. Heart 2018 · PMID 29785957 · DOI 10.1136/heartjnl-2017-312651
    Cohort studyindependent cross-checkabstract checked

    Daily egg eaters had a lower risk of heart disease and stroke.

    Higher egg (and dietary cholesterol) intake increases the risk of cardiovascular disease and all-cause mortality (each additional half egg per day: +6% CVD, +8%

    Does the study support the specific claim? No · Methodological quality: high · Certainty of evidence: see overall assessment of the claim

    Original publication · Scientific details

    Study explained simply
    What did the researchers want to find out?

    Is egg consumption associated with CVD subtypes in Chinese adults?

    How was the study done?

    Prospective cohort (China Kadoorie Biobank)

    How many people, animals or samples were studied?

    461,213 participants; 83,977 CVD cases; 9,985 CVD deaths; Adults 30-79 from 10 regions, free of cancer, CVD, diabetes

    What was actually found?

    Daily vs non-consumers: CVD HR 0.89 (0.87-0.92); IHD 0.88; MCE 0.86; haemorrhagic stroke 0.74; ischaemic stroke 0.90; 18% lower CVD death.

    How large was the observed effect?

    Stratified Cox HR

    What do the results mean in everyday life?

    No sign of harm at moderate intake.

    What are the study's limitations?

    Low intake range; Reverse causation possible

    What does it say about Elawady's specific claim?

    Contradicts.

    Do the results apply to Germany and Europe?

    Moderate.

    What can explicitly not be concluded from this study?

    Cannot prove benefit.

    Scientific details →

  • Eggs and risk of death: 2.2 million people

    Mousavi SM et al.. Adv Nutr 2022 · PMID 35396834 · DOI 10.1093/advances/nmac040
    Meta-analysisindependent cross-checkabstract checked★ key study

    Egg intake was not linked to overall or heart deaths; a small link with cancer deaths was found.

    Higher egg (and dietary cholesterol) intake increases the risk of cardiovascular disease and all-cause mortality (each additional half egg per day: +6% CVD, +8%

    Does the study support the specific claim? No · Methodological quality: moderate · Certainty of evidence: see overall assessment of the claim

    Original publication · Scientific details

    Study explained simply
    What did the researchers want to find out?

    Is egg consumption associated with all-cause and cause-specific mortality?

    How was the study done?

    Systematic review and dose-response meta-analysis of 33 cohorts

    How many people, animals or samples were studied?

    2,216,720 participants; 232,408 deaths; General population

    What was actually found?

    Highest vs lowest: all-cause RR 1.02 (0.94-1.11); CVD 1.04 (0.87-1.23); CHD 0.98; stroke 0.81 (0.64-1.02); cancer mortality 1.20 (1.04-1.39). Per egg/week: +2% all-cause, +4% cancer, -4% stroke mortality (linear). Certainty low to moderate.

    How large was the observed effect?

    Random effects

    What do the results mean in everyday life?

    Up to one egg a day appears compatible with a healthy diet.

    What are the study's limitations?

    Overlap with other meta-analyses; Heterogeneity

    What does it say about Elawady's specific claim?

    Mostly contradicts; notes uncertainty.

    Do the results apply to Germany and Europe?

    High.

    What can explicitly not be concluded from this study?

    Cannot prove causation of cancer deaths.

    Scientific details →

  • More than one egg a day not linked to heart disease

    Krittanawong C et al.. Am J Med 2021 · PMID 32653422 · DOI 10.1016/j.amjmed.2020.05.046
    Meta-analysisindependent cross-checkabstract checked

    HR 0.99 (0.93-1.06) for cardiovascular events in 1.4 million people.

    >1 egg/day not associated with CVD (HR 0.99).

    Does the study support the specific claim? No · Methodological quality: moderate · Certainty of evidence: see overall assessment of the claim

    Original publication · Scientific details

    Study explained simply
    What did the researchers want to find out?

    Pool cohort studies on eggs and CVD.

    How was the study done?

    Meta-analysis.

    How many people, animals or samples were studied?

    23 studies, 1.4 million people.

    What was actually found?

    No higher CVD risk.

    How large was the observed effect?

    HR 0.99.

    What do the results mean in everyday life?

    Eating eggs regularly was not linked to more heart disease.

    What are the study's limitations?

    Observational; overlapping studies.

    What does it say about Elawady's specific claim?

    Contradicts it.

    Do the results apply to Germany and Europe?

    Moderate.

    What can explicitly not be concluded from this study?

    It cannot prove eggs protect the heart.

    Scientific details →

  • Iranian study: eggs not linked to heart disease

    Mohammadifard N et al.. Eur J Clin Nutr 2022 · PMID 35347253 · DOI 10.1038/s41430-022-01118-1
    Cohort studyindependent cross-checkabstract checked

    Eating eggs 3+ times a week was not linked to heart attacks, strokes or CVD over 12 years.

    Middle Eastern cohort: no association of >=3 eggs/week with CVD (HR 1.05, 0.79-1.40).

    Does the study support the specific claim? No · Methodological quality: moderate · Certainty of evidence: see overall assessment of the claim

    Original publication · Scientific details

    Study explained simply
    What did the researchers want to find out?

    Study eggs and CVD in Iran.

    How was the study done?

    Cohort of 6,504 adults.

    How many people, animals or samples were studied?

    6,504.

    What was actually found?

    No significant associations.

    How large was the observed effect?

    CVD HR 1.05 (0.79-1.40).

    What do the results mean in everyday life?

    In a Middle Eastern population, regular egg eating was not linked to heart disease.

    What are the study's limitations?

    Imprecise estimates.

    What does it say about Elawady's specific claim?

    Contradicts it regionally.

    Do the results apply to Germany and Europe?

    Moderate.

    What can explicitly not be concluded from this study?

    It cannot exclude a small effect.

    Scientific details →

Studies with mixed or unclear results (2)

  • Eggs and heart disease: dose-response review

    Godos J et al.. Eur J Nutr 2021 · PMID 32865658 · DOI 10.1007/s00394-020-02345-7
    Meta-analysisindependent cross-checkabstract checked

    Moderate egg intake was not linked to more heart disease; a possible higher heart failure risk at 1+ egg/day.

    Higher egg (and dietary cholesterol) intake increases the risk of cardiovascular disease and all-cause mortality (each additional half egg per day: +6% CVD, +8%

    Does the study support the specific claim? Partly · Methodological quality: moderate · Certainty of evidence: see overall assessment of the claim

    Original publication · Scientific details

    Study explained simply
    What did the researchers want to find out?

    Is egg consumption associated with CVD, CHD, stroke and heart failure?

    How was the study done?

    Dose-response meta-analysis of prospective cohort studies with GRADE

    How many people, animals or samples were studied?

    ~2 million; 85,053 CHD, 25,103 stroke, 7,536 HF, 147,124 CVD cases; 39 studies, ~2 million individuals

    What was actually found?

    4 eggs/week: CVD SRR 0.95 (0.90-1.00); up to 1 egg/day CVD incidence 0.94 (0.89-0.99); CHD decreased up to 2 eggs/week; stroke no association; heart failure 1 egg/day SRR 1.15 (1.02-1.30). GRADE low for all but stroke (moderate).

    How large was the observed effect?

    Random-effects dose-response

    What do the results mean in everyday life?

    Moderation seems fine; very high intake uncertain.

    What are the study's limitations?

    Overlap with other meta-analyses; Low certainty

    What does it say about Elawady's specific claim?

    Mostly contradicts, with one caveat.

    Do the results apply to Germany and Europe?

    High.

    What can explicitly not be concluded from this study?

    Low certainty evidence.

    Scientific details →

  • AHA on dietary cholesterol

    Carson JAS et al.. Circulation 2020 · PMID 31838890 · DOI 10.1161/CIR.0000000000000743
    Guideline / position statementindependent cross-checkabstract checked★ key study

    Studies do not show a clear link between dietary cholesterol and heart disease, but high intakes can raise LDL; focus on overall diet.

    Higher egg (and dietary cholesterol) intake increases the risk of cardiovascular disease and all-cause mortality (each additional half egg per day: +6% CVD, +8%

    Does the study support the specific claim? Partly · Methodological quality: moderate · Certainty of evidence: see overall assessment of the claim

    Original publication · Scientific details

    Study explained simply
    What did the researchers want to find out?

    What is the relevance of dietary cholesterol guidance for heart health?

    How was the study done?

    Science advisory based on review of human studies

    How many people, animals or samples were studied?

    Not applicable; General population

    What was actually found?

    Observational studies generally do not indicate a significant association with CVD; most intervention meta-analyses associate intakes above current averages with higher total/LDL cholesterol; guidance should focus on healthy dietary patterns.

    How large was the observed effect?

    Not applicable

    What do the results mean in everyday life?

    Overall diet pattern matters more than counting cholesterol.

    What are the study's limitations?

    Not a formal systematic review

    What does it say about Elawady's specific claim?

    Partly supports (LDL), mostly limits the claim.

    Do the results apply to Germany and Europe?

    US body; EU bodies similar in not setting numeric limits [EFSA not fetched].

    What can explicitly not be concluded from this study?

    Not a quantitative analysis.

    Scientific details →

Regional context

Germany / EU

European cohorts in the BMJ 2020 meta-analysis showed no association (RR 1.05, 0.92-1.19). The AHA (US) no longer sets a numeric cholesterol limit but recommends dietary patterns naturally low in cholesterol. [The German DGE position was not fetched for this review.]

Egypt

No Egyptian cohort data were found. A 12-year Iranian cohort (I-EGG-111) and the multinational PURE study, including middle-income countries (I-EGG-02), show no increased risk at moderate intake; Asian cohorts in Zhao 2022 show no association (RR 0.96).

What applies in my country?

General scientific assessment

Mostly false Moderate egg intake is not consistently linked to more heart disease or deaths; a small association appears mainly in US studies, so the archive's single US study does not represent the overall or regional evidence.

The following areas of food safety are relevant to this statement:

  • Veterinary medicines and antibiotics
  • Contaminants (heavy metals, PFAS, PCBs, dioxins, nitrate)
  • Pathogens (Salmonella, Campylobacter, etc.)
  • Animal husbandry and feed
  • Controls, imports, recalls, labelling

Eggs

Choose a country to see the checked information for it.

Limits: legal rules describe what is allowed, not what every single food contains. Measurement data come from samples and are meaningful only together with their method details.

Country of residence or purchase Compare with another country

References

  1. Associations of Dietary Cholesterol or Egg Consumption With Incident Cardiovascular Disease and Mortality.. Zhong VW et al.. JAMA 2019 · PMID 30874756 · DOI 10.1001/jama.2019.1572
  2. Meta-regression analysis of the effects of dietary cholesterol intake on LDL and HDL cholesterol.. Vincent MJ et al.. Am J Clin Nutr 2019 · PMID 30596814 · DOI 10.1093/ajcn/nqy273
  3. Associations of Dietary Cholesterol, Serum Cholesterol, and Egg Consumption With Overall and Cause-Specific Mortality: Systematic Review and Updated Meta-Analysis.. Zhao B et al.. Circulation 2022 · PMID 35360933 · DOI 10.1161/CIRCULATIONAHA.121.057642
  4. Association of Egg Consumption with Risk of All-Cause and Cardiovascular Disease Mortality: A Systematic Review and Dose-Response Meta-Analysis of Observational Studies.. Ma W et al.. J Nutr 2022 · PMID 35524693 · DOI 10.1093/jn/nxac105
  5. Egg consumption and risk of cardiovascular disease: three large prospective US cohort studies, systematic review, and updated meta-analysis.. Drouin-Chartier JP et al.. BMJ 2020 · PMID 32132002 · DOI 10.1136/bmj.m513
  6. Association of egg intake with blood lipids, cardiovascular disease, and mortality in 177,000 people in 50 countries.. Dehghan M et al.. Am J Clin Nutr 2020 · PMID 31965140 · DOI 10.1093/ajcn/nqz348
  7. Associations of egg consumption with cardiovascular disease in a cohort study of 0.5 million Chinese adults.. Qin C et al.. Heart 2018 · PMID 29785957 · DOI 10.1136/heartjnl-2017-312651
  8. Egg Consumption and Risk of All-Cause and Cause-Specific Mortality: A Systematic Review and Dose-Response Meta-analysis of Prospective Studies.. Mousavi SM et al.. Adv Nutr 2022 · PMID 35396834 · DOI 10.1093/advances/nmac040
  9. Association Between Egg Consumption and Risk of Cardiovascular Outcomes: A Systematic Review and Meta-Analysis.. Krittanawong C et al.. Am J Med 2021 · PMID 32653422 · DOI 10.1016/j.amjmed.2020.05.046
  10. Egg consumption and risk of cardiovascular events among Iranians: results from Isfahan Cohort Study (ICS).. Mohammadifard N et al.. Eur J Clin Nutr 2022 · PMID 35347253 · DOI 10.1038/s41430-022-01118-1
  11. Egg consumption and cardiovascular risk: a dose-response meta-analysis of prospective cohort studies.. Godos J et al.. Eur J Nutr 2021 · PMID 32865658 · DOI 10.1007/s00394-020-02345-7
  12. Dietary Cholesterol and Cardiovascular Risk: A Science Advisory From the American Heart Association.. Carson JAS et al.. Circulation 2020 · PMID 31838890 · DOI 10.1161/CIR.0000000000000743

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