Meta-analysisindependent cross-checkabstract checked I-FRU-115 standard review
100% fruit juice and heart risk
100% Fruit juice intake and cardiovascular risk: a systematic review and meta-analysis of prospective and randomised controlled studies.
Overview
D'Elia L et al.. Eur J Nutr 2021 · PMID 33150530 · DOI 10.1007/s00394-020-02426-7
Small daily amounts of pure fruit juice were not linked to higher cardiovascular risk and were linked to slightly lower stroke risk.
Does the study support the specific claim? Partly · Methodological quality: moderate
Plain-language summary
Study explained simply
- What did the researchers want to find out?
Pool data on juice and CV risk.
- How was the study done?
Meta-analysis.
- How many people, animals or samples were studied?
21 cohorts, 35 RCTs.
- What was actually found?
No harm at low-moderate intake.
- How large was the observed effect?
BP -3.14 mmHg in RCTs.
- What do the results mean in everyday life?
A small glass of pure juice is acceptable.
- What are the study's limitations?
Small RCTs.
- What does it say about Elawady's specific claim?
Partly supports allowing small amounts of 100% juice.
- Do the results apply to Germany and Europe?
Applicable.
- What can explicitly not be concluded from this study?
It does not support nectars.
Scientific in-depth review
1. Full reference
- Authors
- D'Elia L et al.
- Journal
- Eur J Nutr
- Year
- 2021
- Identifier
- PMID 33150530 DOI 10.1007/s00394-020-02426-7 · PMC8275541
- Verification
- verified – PubMed efetch 2026-10-26 + Crossref works API
- Retracted
- no
- Corrections
- none
- Extent checked
- abstract only
- Conflicts of interest and funding
No conflict of interest declared.
2. Research question
Is 100% fruit juice associated with cardiovascular risk?
3. Study design and population
- Study design
- Meta-analysis – Systematic review and meta-analysis of prospective studies and RCTs
- Population
Adults
- Country
International
- Period
Searches to August 2019
- Sample size
21 prospective studies, 35 RCTs
- Inclusion and exclusion criteria
100% fruit juice exposure.
4. Methods and endpoints
- Exposure / intervention
100% fruit juice
- Comparator
No/low intake; control
- Endpoints
Stroke, CVD, CHD, diabetes; BP, lipids, glucose, weight
- Statistical methods
Dose-response meta-analysis; mean differences
5. Actual results
- Results
Non-linear inverse association of low-moderate intake with stroke (up to 200 ml/day) and total CV events (up to 170 ml/day); no significant association with CHD or diabetes; RCTs: systolic BP -3.14 mmHg, diastolic -1.68 mmHg, PWV -0.38 m/s, FMD +2.10%; neutral on weight, lipids, glucose.
- Absolute risks
Not reported
- Authors' conclusion
100% fruit juice is not associated with higher CV risk; low-moderate intake may lower stroke risk.
6. Strengths
- Combines cohorts and RCTs
- Dose-response
7. Weaknesses
- Many small RCTs
- Abstract only
8. Risk of bias
- Orienting tool
- AMSTAR 2
- Type of assessment
- simplified assessment (abstract only)
- Full formal assessment
- no
- Overall risk of bias
- some concerns
- Rationale
Abstract-level appraisal.
9. Assessment of the statistical interpretation
Benefit limited to small amounts (<=170-200 ml/day).
10. Relevance to the specific claim
Fair counterpoint for C-FRU-03: small amounts of 100% juice are not harmful; does not support nectars or unlimited juice.
11. Independent contrary findings
12. Transferability to Germany and Europe
Applicable.
13. Overall methodological judgement
Supports 'small amounts of 100% juice are acceptable'.
| Multidimensional assessment | |
|---|---|
| Authenticity of the source | verified |
| Methodological quality | moderate |
| Risk of bias | some concerns |
| Precision of results | moderate |
| Directness | direct |
| Reproducibility | partly replicated |
| Consistency with the overall evidence | mixed |
| Regional transferability | moderate |
| Adequacy of the interpretation (by the archive) | not applicable |
14. Open questions
None.