Depression treatment
Diet quality and depression risk
Open access · cc by · source: Europe PMC
In the SUN cohort, higher adherence to Mediterranean, pro-vegetarian, and AHEI-2010 diet scores tracked with lower risk of incident depression over about 8.5 years.
Study at a glance
- Design
- Cohort — SUN Project prospective cohort; diet scores as time-updated exposures
- N
- N=15093 · Spanish adults free of depression at baseline
- Population
- Spanish university-graduate adults without baseline physician-diagnosed depression
- Outcome
- Incident physician-diagnosed depression (HRs by MDS, PDP, AHEI-2010 adherence)
Structured fields used in claim comparison tables when every cited study has a complete layer.
Key findings
Better adherence to all three diet-quality scores predicted lower depression risk, with a threshold-like rather than strictly linear dose–response; PDP highest vs lowest quintile HRs were about 0.78 (baseline) and 0.74 (updated diet).
Methodology
Investigators followed 15,093 Spanish adults free of depression at baseline, scored diet quality with MDS, PDP, and AHEI-2010, and estimated hazard ratios for new physician-diagnosed depression.
Limitations
Observational associations cannot prove diet causes less depression, and residual confounding or self-report bias may remain.
How this study connects
Role on claims
Each row is a claim on a concept or method page where this paper supports, challenges, or qualifies the statement. Roles are hand-checked — not a model guess.
Diet and alcohol papers in this set report HRs for incident depression or CVD that are threshold-like or beverage-specific rather than strictly linear. Low-to-moderate alcohol (>5–15 g/day) had HR 0.72 for incident depression among 5,505 older Mediterranean adults; each extra 10 g/day olive oil in PREDIMED participants had HR 0.87 for major CVD events; higher diet-quality quintiles had depression HRs around 0.74–0.78.
Evidence for the claim as stated.
Diet-quality scores in 15,093 Spanish adults free of depression at baseline showed a threshold-like rather than strictly linear association with new physician-diagnosed depression. For the PDP score, highest versus lowest quintile HRs were about 0.78 using baseline diet and 0.74 using updated diet. That is still an observational association, not a feeding trial.
Evidence for the claim as stated.
Follow-up of thousands of event-free adults is a different design from a 74-person telemedicine case series, even if both get filed as cohorts. The HLI, diet-depression, smoking-CVD and Rotterdam papers estimate rates or attributable fractions over years. The WeChat paper describes outcomes after care already delivered, with no control group, so it cannot show that monitoring caused recovery.
Evidence for the claim as stated.
Protective lifestyle HRs and harmful drug HRs are not interchangeable clinical instructions. Diet-quality HRs around 0.74–0.78 and HLI HRs of 0.67–0.77 do not prove that prescribing a diet would prevent depression or diabetes, while extra falls on named antidepressants may mark who is prescribed them rather than a pure drug effect. Norwegian cancer-survival SES gradients even became non-significant after stage and smoking were in the model.
Evidence for the claim as stated.
Open questions
Tensions this paper is part of
From concept pages' “where studies disagree.” Disagreement means the same question; scope means different assays, populations, or outcomes.
Follow-up of thousands of event-free adults is a different design from a 74-person telemedicine case series, even if both get filed as cohorts. The HLI, diet-depression, smoking-CVD and Rotterdam papers estimate rates or attributable fractions over years. The WeChat paper describes outcomes after care already delivered, with no control group, so it cannot show that monitoring caused recovery.
Protective lifestyle HRs and harmful drug HRs are not interchangeable clinical instructions. Diet-quality HRs around 0.74–0.78 and HLI HRs of 0.67–0.77 do not prove that prescribing a diet would prevent depression or diabetes, while extra falls on named antidepressants may mark who is prescribed them rather than a pure drug effect. Norwegian cancer-survival SES gradients even became non-significant after stage and smoking were in the model.
- Supports · Healthy lifestyle and multimorbidity risk
- Supports · Antidepressant adverse events cohort
- Supports · Does socioeconomic status change cancer survival?
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