Cohort studycited by the Tayebat archiveabstract only checked A-UPF-07 standard review
Ultra-processed food and death in Italy
Ultra-processed food consumption is associated with increased risk of all-cause and cardiovascular mortality in the Moli-sani Study.
Overview
Bonaccio M et al.. Am J Clin Nutr 2021 · PMID 33333551 · DOI 10.1093/ajcn/nqaa299
Highest consumers had 58% higher cardiovascular death risk; sugar content explained about a third of the heart/stroke link.
Does the study support the specific claim? Yes · Methodological quality: moderate
Plain-language summary
Study explained simply
- What did the researchers want to find out?
Is UPF associated with mortality; which factors mediate?
- How was the study done?
Prospective cohort, FFQ.
- How many people, animals or samples were studied?
22,475; Adults mean age 55
- What was actually found?
Q4 vs Q1: CVD mortality HR 1.58 (1.23-2.03); IHD/cerebrovascular 1.52 (1.10-2.09); all-cause 1.26 (1.09-1.46); sugar content explained 36.3% of IHD/cerebrovascular association; renal biomarkers 20.1%.
- How large was the observed effect?
HR 1.58 CVD mortality
- What do the results mean in everyday life?
Sugar in UPF may be a key factor.
- What are the study's limitations?
NOVA misclassification possible; Residual confounding; Self-reported diet
- What does it say about Elawady's specific claim?
Supports C-UPF-03.
- Do the results apply to Germany and Europe?
High (Italy).
- What can explicitly not be concluded from this study?
Causation.
Scientific in-depth review
1. Full reference
- Authors
- Bonaccio M, Di Castelnuovo A, Costanzo S, De Curtis A, Persichillo M, Sofi F, Cerletti C, Donati MB, de Gaetano G, Iacoviello L
- Journal
- Am J Clin Nutr
- Year
- 2021
- Identifier
- PMID 33333551 DOI 10.1093/ajcn/nqaa299
- 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
2. Research question
Is UPF associated with mortality; which factors mediate?
3. Study design and population
- Study design
- Cohort study – Prospective cohort, FFQ.
- Population
Adults mean age 55
- Country
Italy
- Period
2005-2010 recruitment; 8.2 y follow-up
- Sample size
22,475
- Inclusion and exclusion criteria
not stated in abstract
4. Methods and endpoints
- Exposure / intervention
UPF % of food weight (quartiles)
- Comparator
Q1 (<6.6%)
- Endpoints
CVD, IHD/cerebrovascular and all-cause mortality
- Statistical methods
Cox; mediation
5. Actual results
- Results
Q4 vs Q1: CVD mortality HR 1.58 (1.23-2.03); IHD/cerebrovascular 1.52 (1.10-2.09); all-cause 1.26 (1.09-1.46); sugar content explained 36.3% of IHD/cerebrovascular association; renal biomarkers 20.1%.
- Absolute risks
not reported
- Authors' conclusion
High UPF associated with CVD and all-cause mortality, partly through high sugar content.
6. Strengths
- Mediation analysis
7. Weaknesses
- NOVA misclassification possible
- Residual confounding
- Self-reported diet
8. Risk of bias
- Orienting tool
- ROBINS-E
- Type of assessment
- simplified assessment (abstract only)
- Full formal assessment
- no
- Overall risk of bias
- some concerns
- Rationale
Confounding.
9. Assessment of the statistical interpretation
Moderate HRs.
10. Relevance to the specific claim
Supports C-UPF-03.
11. Independent contrary findings
None.
12. Transferability to Germany and Europe
High (Italy).
13. Overall methodological judgement
Supportive; points to sugar.
| Multidimensional assessment | |
|---|---|
| Authenticity of the source | verified |
| Methodological quality | moderate |
| Risk of bias | some concerns |
| Precision of results | moderate |
| Directness | direct |
| Reproducibility | replicated |
| Consistency with the overall evidence | consistent |
| Regional transferability | high |
| Adequacy of the interpretation (by the archive) | not applicable |
14. Open questions
Causality.
15. Linked fact checks
Use by the Tayebat archive
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 the archive bibliography only (no archive interpretation card).
- A. What was actually studied?
UPF and mortality in Italy.
- B. What did the authors find?
As above; sugar a mediator.
- C. What conclusions do the authors themselves draw?
As above.
- D. What does the archive derive from it?
Supports mortality claim.
- E. Is this derivation scientifically justified?
Consistent; note sugar content as main mediator — relevant to the system's tolerance of sugar.
- Adequacy of the interpretation (by the archive)
- not applicable