Insomnia severity is negatively associated with life satisfaction and positively associated with psychological distress in adults from Mediterranean and neighbouring countries.
In a cross-sectional survey of 4010 adults, higher insomnia severity was the strongest negative correlate of life satisfaction (β = -0.19) and the strongest positive correlate of depression, anxiety, and stress (β ≈ 0.43-0.47). These associations were consistent across all psychological outcomes, suggesting sleep-related variables are key correlates of mental well-being.
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Insomnia severity is negatively associated with life satisfaction and positively associated with psychological distress in adults from Mediterranean and neighbouring countries. The current body of evidence comprises 1 study. EvidenceHub rates the overall confidence at 34/100 (low).
The Claim
Insomnia severity is negatively associated with life satisfaction and positively associated with psychological distress in adults from Mediterranean and neighbouring countries.
This conclusion is most relevant to: Adults (59.5% female) from 10 Mediterranean and neighbouring countries participating in the MEDIET4ALL survey..
What the Research Shows
The conclusion draws on 1 linked study. Highlights from the cited literature:
- ▸Life Satisfaction and Psychological Distress in Relation to Mediterranean Lifestyle Adherence and Behavioural Correlates: Findings from the MEDIET4ALL International Survey. (Nutrients, 2026) —
How It Works
The proposed biological pathway:
- ▸Insomnia severity is measured via validated scale.
- ▸Higher insomnia severity is associated with lower life satisfaction.
- ▸Higher insomnia severity is associated with higher depression, anxiety, and stress.
- ▸Insomnia severity emerges as the strongest correlate across all psychological outcomes.
Who Might Benefit
Evidence fit by population:
- ▸Adults (59.5% female) from 10 Mediterranean and neighbouring countries participating in the MEDIET4ALL survey.
Recommended Dose
N/A
Limitations & Caveats
Important context when interpreting this evidence:
- ▸Cross-sectional design prevents causal inference and temporal ordering.
- ▸Exploratory indirect-association analyses are hypothesis-generating, not evidence of mediation.
- ▸Self-reported measures may introduce reporting bias.
Frequently Asked Questions
What was the strongest correlate of life satisfaction in this study?▼
Insomnia severity showed the strongest negative association with life satisfaction (β = -0.19).
How was psychological distress measured?▼
Psychological distress was measured using the Depression Anxiety Stress Scales (DASS-21), assessing depression, anxiety, and stress.
What population was studied?▼
Adults from 10 Mediterranean and neighbouring countries, with 59.5% female, totaling 4010 participants.
Is this study evidence of a causal relationship between insomnia and distress?▼
No, the cross-sectional design means the findings are hypothesis-generating and do not establish causality or temporal ordering.
References
- 1.Ammar A, Salem A, Trabelsi K, Montalvan M, Bouaziz B, Boujelbane MA, Kerkeni M, Masmoudi L, Ghazzawi HA, Amawi AT, Orhan BE, Zambrano-Villacres R, Heydenreich J, Schallhorn C, Driss T, Frias-Toral E, Zmijewski P, Jahrami H, Husain W, Grosso G, Chtourou H, Schöllhorn WI. “Life Satisfaction and Psychological Distress in Relation to Mediterranean Lifestyle Adherence and Behavioural Correlates: Findings from the MEDIET4ALL International Survey..” Nutrients, 2026. PMID: 42654288 DOI: 10.3390/nu18162708