Meta-analysisindependent cross-checkabstract checked I-DRY-107 standard review
Yogurt linked to lower mortality; total dairy best at moderate amounts
The dose-response relationship between dairy product intake and all-cause and cardiovascular mortality risk: a systematic review and meta-analysis of prospective cohort studies.
Overview
Hu X et al.. Front Nutr 2026 · PMID 41660415 · DOI 10.3389/fnut.2026.1731841
200 g yogurt/day: 11% lower all-cause mortality; total dairy U-shaped (optimum ~250-300 g/day).
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?
Find how much and which dairy relates to mortality.
- How was the study done?
Dose-response meta-analysis.
- How many people, animals or samples were studied?
29 cohorts, 1.68 million people.
- What was actually found?
Yogurt and to a lesser extent cheese and milk linked to lower mortality; very high totals not.
- How large was the observed effect?
Yogurt HR 0.89 per 200 g/day.
- What do the results mean in everyday life?
Moderate dairy, especially yogurt, looks fine or beneficial.
- What are the study's limitations?
Observational; overlapping data.
- What does it say about Elawady's specific claim?
Contradicts forbidding yogurt; partly supports caution about very high intakes.
- Do the results apply to Germany and Europe?
Applicable.
- What can explicitly not be concluded from this study?
Cannot prove cause and effect.
Scientific in-depth review
1. Full reference
- Authors
- Hu X et al.
- Journal
- Front Nutr
- Year
- 2026
- Identifier
- PMID 41660415 DOI 10.3389/fnut.2026.1731841
- Verification
- verified – PubMed efetch 2026-10-26
- Retracted
- no
- Corrections
- none
- Extent checked
- abstract only
- Conflicts of interest and funding
Authors declare no commercial conflicts.
2. Research question
Dose-response of dairy types with all-cause and CVD mortality.
3. Study design and population
- Study design
- Meta-analysis – Systematic review and dose-response meta-analysis of prospective cohorts (PubMed, Web of Science, Embase to 19 June 2025; PROSPERO CRD420251067824)
- Population
Healthy adults in prospective cohorts
- Country
Multinational
- Period
to June 2025
- Sample size
29 cohorts; 1,680,651 participants
- Inclusion and exclusion criteria
Prospective cohorts in healthy adults reporting dairy and mortality
4. Methods and endpoints
- Exposure / intervention
Total dairy, milk, yogurt, cheese
- Comparator
Lower intake
- Endpoints
All-cause and CVD mortality
- Statistical methods
Linear and restricted cubic spline dose-response
5. Actual results
- Results
Yogurt 200 g/day: all-cause HR 0.89 (0.83-0.96), CVD 0.89 (0.83-0.95). Cheese 15 g/day: CVD mortality 0.95 (0.91-0.99) only. Milk 200 g/day: CVD mortality 0.86 (0.75-0.98) in non-sex-stratified studies (7). Total dairy U-shaped with optimum about 250-300 g/day.
- Absolute risks
not reported
- Authors' conclusion
Health effects depend on dairy type and dose; fermented dairy, particularly yogurt, appears more beneficial; results do not support a uniform protective effect of all dairy.
6. Strengths
- Recent, large
- Dose-response by type
7. Weaknesses
- Overlaps with earlier meta-analyses (e.g. I-DRY-02)
- Observational
- Mid-tier journal; abstract only read
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
Registered protocol; abstract only.
9. Assessment of the statistical interpretation
Small relative associations; U-shape implies that very high total intakes may lose benefit, consistent with the Swedish very-high-intake signal.
10. Relevance to the specific claim
Yogurt, which the system forbids, shows the most favourable mortality association; very high total dairy intakes lose the benefit, which fits part of the archive's concern about high intakes.
11. Independent contrary findings
Overlapping cohorts with I-DRY-02 and A-DRY-01; not independent confirmation.
12. Transferability to Germany and Europe
Mostly Western cohorts.
13. Overall methodological judgement
Supports moderation, not exclusion; favours fermented dairy.
| 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
Causality; reasons for U-shape.
15. Linked fact checks
- High milk consumption raises mortality (women drinking 3+ glasses/day had 93% higher mortality) and increases rather than prevents hip fractures. – Studies with mixed or unclear results
- Fresh milk, yogurt (incl. laban rayeb, ayran, labneh) and white/cottage cheese are harmful and must be avoided, whereas aged cheeses (cheddar, mozzarella, romi), processed cheese triangles, cream (qeshta), butter and ghee are allowed. – Studies contradicting or limiting the claim