Psychiatry · Public Health · 1 h ago
Review links healthy dietary patterns with lower depression frequency
A systematic review of 26 observational studies found an inverse association between healthy dietary patterns and common mental disorders, particularly depression. Evidence on anxiety was limited and inconsistent, while findings for unhealthy dietary patterns were heterogeneous.
- Review included 26 observational studies in adults.
- Healthy dietary patterns were inversely associated with depression frequency.
- Evidence for anxiety was limited and inconsistent.
- Unhealthy-pattern findings were heterogeneous and unclear.
Researchers conducted a PRISMA-guided systematic review of observational studies on dietary patterns and depression or anxiety in adults. Six databases were searched through 2024, and two reviewers independently selected studies and extracted data. The review included 26 studies, with participant numbers ranging from 135 to 14,541; 20 studies examined depression, five anxiety, and one both conditions.
Healthy dietary patterns were associated with a lower frequency of common mental disorders, with the clearest evidence for depression. Findings for anxiety were limited and inconsistent because few studies addressed it. Associations with unhealthy dietary patterns were unclear, with substantial variation across studies; mixed and mixed-alcoholic patterns also showed no consistent association.
Because the included evidence was observational, the findings do not establish that diet causes changes in mental health. The authors call for more robust studies. The review supports further investigation of diet in mental health promotion but does not establish a specific dietary intervention or justify changes to clinical care.
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BMC Public Health: Dietary patterns and adult mental health: a systematic review of observational studies ↗This is an automated AI-condensed summary that has not yet been reviewed by an editor. Always consult the full item at the original source.