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Youth diet quality and hazard of mood disorder in adolescence and adulthood among an Australian cohort


Wilson, JE and Blizzard, L and Gall, SL and Magnussen, CG and Oddy, WH and Dwyer, T and Venn, AJ and Smith, KJ, Youth diet quality and hazard of mood disorder in adolescence and adulthood among an Australian cohort, Journal of Affective Disorders, 276 pp. 511-518. ISSN 0165-0327 (2020) [Refereed Article]

Copyright Statement

2020 Elsevier B.V. All rights reserved.

DOI: doi:10.1016/j.jad.2020.07.048


Background: Prospective studies on youth diet and mood disorders outcomes are limited. We examined if youth diet quality was associated with mood disorder onset over a 25-year follow-up period.

Methods: In 1985, Australian participants (aged 1015 years) completed a 24-hour food record. A validated 100-point Dietary Guidelines Index (DGI) assessed diet quality. In 200911, 1005 participants (aged 3341 years) completed the lifetime Composite International Diagnostic Interview for age of first DSM-IV defined mood disorder (depression or dysthymia). Cox proportional hazards regression estimated hazard of mood disorder during the 25-year follow-up according to baseline DGI score. Sensitivity analyses censored the study at 5, 10, and 15 years after baseline and used log binomial regression to estimate relative risk (RR). Covariates included baseline negative affect, BMI, academic performance, smoking, breakfast eating, physical activity, and socioeconomic status.

Results: The mean(SD) youth DGI score was 45.0(11.5). A 10-point higher DGI was not associated with hazard of mood disorder onset over the 25-year follow-up (Hazard Ratio (HR):1.00; 95% Confidence Interval (CI):0.891.13). The only indication that higher DGI might be associated with lower risk of mood disorder was within the first 5 years after baseline and this was not statistically significant (RR=0.85; 95% CI:0.601.18).

Limitations: Loss-to-follow-up. A single 24-hour food record may not represent usual diet.

Conclusion: Youth diet did not predict mood disorders in adulthood. The suggestions of a lower risk of mood disorder during late adolescence highlights that further prospective studies are needed.

Item Details

Item Type:Refereed Article
Keywords:child, adolescent, DSM-IV, depressive disorder, affective disorder, nutrition
Research Division:Health Sciences
Research Group:Public health
Research Field:Community child health
Objective Division:Health
Objective Group:Public health (excl. specific population health)
Objective Field:Nutrition
UTAS Author:Wilson, JE (Dr Johanna Wilson)
UTAS Author:Blizzard, L (Professor Leigh Blizzard)
UTAS Author:Gall, SL (Associate Professor Seana Gall)
UTAS Author:Magnussen, CG (Associate Professor Costan Magnussen)
UTAS Author:Oddy, WH (Professor Wendy Oddy)
UTAS Author:Dwyer, T (Professor Terry Dwyer)
UTAS Author:Venn, AJ (Professor Alison Venn)
UTAS Author:Smith, KJ (Dr Kylie Smith)
ID Code:140726
Year Published:2020
Web of Science® Times Cited:5
Deposited By:Menzies Institute for Medical Research
Deposited On:2020-09-02
Last Modified:2020-10-16

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