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Associations between diet quality and DSM‑IV mood disorders during young‑ to mid‑adulthood among an Australian cohort

Wilson, JE, Blizzard, L ORCID: 0000-0002-9541-6943, Gall, SL ORCID: 0000-0002-5138-2526, Magnussen, CG ORCID: 0000-0002-6238-5730, Oddy, WH ORCID: 0000-0002-6119-7017, Dwyer, T, Venn, AJ ORCID: 0000-0001-7090-1398 and Smith, KJ ORCID: 0000-0003-2793-3460 2021 , 'Associations between diet quality and DSM‑IV mood disorders during young‑ to mid‑adulthood among an Australian cohort' , Social Psychiatry and Psychiatric Epidemiology , doi: 10.1007/s00127-021-02086-w.

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Abstract

Purpose: Many studies have reported associations between diet and depression, but few have used formal diagnoses of mood disorder as the outcome measure. We examined if overall diet quality was associated cross-sectionally or longitudinally with DSM-IV mood disorders among an adult cohort.Methods: Participants from the Australian Childhood Determinants of Adult Health study were followed up during 2004-06 (n = 1974, age 26-36 years), 2009-11 (n = 1480, 31-41 years), and 2014-19 (n = 1191, 36-49 years). Dietary Guidelines Index (DGI) scores were calculated from food frequency questionnaires at each time-point (higher DGI reflects better diet quality). DSM-IV mood disorders (dysthymia or depression) during the periods between, and 12 months prior to each follow-up were determined using the Composite International Diagnostic Interview. Sex-stratified risk and prevalence ratios (PR) and 95% confidence intervals (CI) were estimated using log-binomial regression. Covariates included age, self-perceived social support index score, marital status, parenting status, education, occupation, physical activity, BMI, and usual sleep duration.Results: A 10-point higher DGI was cross-sectionally associated with lower prevalence of mood disorders at the third follow-up only (females PR = 0.73, 95% CI = 0.56, 0.95; males PR = 0.72, 95% CI = 0.53, 0.97), but was attenuated after covariate adjustment (females PR = 0.92, 95% CI = 0.73, 1.16; males PR = 0.92, 95% CI = 0.69, 1.22). Adjustment for social support in the final model had attenuated the association for both sexes from 18% reduced prevalence to 8%. DGI scores were not longitudinally associated with mood disorder risk.Conclusions: Crude cross-sectional associations between diet quality and mood disorders at ages 36-49 years were explained by sociodemographic and lifestyle factors, particularly social support.

Item Type: Article
Authors/Creators:Wilson, JE and Blizzard, L and Gall, SL and Magnussen, CG and Oddy, WH and Dwyer, T and Venn, AJ and Smith, KJ
Keywords: young adult, mental health, diet, longitudinal, social support, depression, nutrition, dietary guidelines
Journal or Publication Title: Social Psychiatry and Psychiatric Epidemiology
Publisher: Dr Dietrich Steinkopff Verlag
ISSN: 0933-7954
DOI / ID Number: 10.1007/s00127-021-02086-w
Copyright Information:

Copyright 2021 Springer-Verlag GmbH Germany, part of Springer Nature

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