{
  "abstract": "Background: Dietary magnesium and omega-3 fatty acid intake have been studied in relation to mental health, with findings varying across populations and exposure measures. We examined separate and joint associations of food-derived intake with elevated depressive symptoms, elevated anxiety symptoms, and suicidal ideation among Korean adults.\n\nMethods: This cross-sectional study included 4,411 adults aged ≥ 19 years from the 2022 Korea National Health and Nutrition Examination Survey. Nutrient intake was assessed by a single 24-hour recall; separately surveyed supplement quantities were not added. High magnesium intake was defined as ≥ 350 mg/day in men and ≥ 250 mg/day in women, and high omega-3 intake as ≥ 1.5 g/day. Elevated depressive and anxiety symptoms were defined as Patient Health Questionnaire-9 and Generalized Anxiety Disorder-7 scores ≥ 10, respectively. Suicidal ideation referred to the previous 12 months. Survey-weighted logistic regression incorporated strata, clusters, integrated health–nutrition weights, and 13 covariates. Multiplicative nutrient interaction and exploratory symptom-score trends across intake quartiles were evaluated.\n\nResults: The adjusted association between high omega-3 intake and elevated depressive symptoms was not statistically significant (odds ratio [OR] 0.833, 95% confidence interval [CI] 0.556–1.249; p = 0.375). Adjusted associations with elevated anxiety symptoms (OR 0.929, 95% CI 0.631–1.367; p = 0.705) and suicidal ideation (OR 0.822, 95% CI 0.557–1.215; p = 0.324) were also not statistically significant. All 12 primary adjusted tests, including magnesium, joint intake, and nutrient interaction, had p > 0.05. The exploratory omega-3–PHQ-9 trend had nominal p = 0.026 and an approximate Benjamini–Hochberg-adjusted p = 0.104 across four trend tests.\n\nConclusions: Adjusted associations between the examined intake categories and mental health indicators were not statistically significant. Imprecise estimates and a single-day dietary assessment leave the relationships with usual intake uncertain. Prospective studies with repeated dietary measurements could help clarify the direction and magnitude of these associations.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 2,
  "authors": [
    {
      "name": "Hyoju Lee"
    },
    {
      "name": "Miyoung Choi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8d78gpxv3q27r.bib",
  "cited_by": 0,
  "doi": "10.1186/s12889-026-29827-3",
  "fulltext_url": null,
  "id": "8d78gpxv3q27r",
  "issns": [
    "1471-2458"
  ],
  "landing_url": "https://link.springer.com/10.1186/s12889-026-29827-3",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2916|Fatty Acid Research and Health"
    ]
  ],
  "openalex": "W7220865844",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-07",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/8d78gpxv3q27r.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:54Z",
      "native_id": "10.1186/s12889-026-29827-3",
      "source": "crossref",
      "url": "https://link.springer.com/10.1186/s12889-026-29827-3"
    }
  ],
  "subjects": [
    {
      "field": "medicine",
      "origin": "issn:1471-2458",
      "subfield": "epidemiology-public-health"
    }
  ],
  "title": "Associations of dietary magnesium and omega-3 fatty acid intake with mental health indicators among Korean adults: a population-based cross-sectional study",
  "title_text": "Associations of dietary magnesium and omega-3 fatty acid intake with mental health indicators among Korean adults: a population-based cross-sectional study",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:19:54Z",
  "url": "https://research.draconitic.com/paper/8d78gpxv3q27r",
  "venue": "BMC Public Health",
  "versions": []
}