The association between dietary patterns and depression in adolescents: A cross-sectional study

Abstract

Introduction and purpose: So far, few studies have examined the relationship between dietary patterns and depression in adolescents. The aim of the present study was to determine this relationship in a sample of adolescent Iranian girls.

Materials and methods: 347 female high school students aged 14-17 years living in Shiraz, Iran participated in this cross-sectional study. General and physical activity questionnaires, 3-d dietary recalls, and Beck Depression Inventory-Second Edition (BDI-II) were completed for all individuals and their anthropometric characteristics were measured. The major dietary patterns were then identified using principal component factor analysis.

Findings: In total, 2 major dietary patterns were identified. After adjusting for potential confounders in multivariate linear regression analysis, the Western pattern (characterized by high consumption of French fries, hydrogenated fats, mayonnaise, sweets and desserts, high-fat dairy, refined grains, red or processed meats, pickles, organ meats and soft drinks and low consumption of low-fat dairy) was positively (standardized β coefficient: 0.510, P < 0.001) and the healthy pattern (characterized by high intake of vegetables, legumes, boiled potatoes, poultry, fish, vegetable oils, olives, fruits and fruit juices and low-fat dairy and low intake of refined grains) was inversely associated (standardized β coefficient: -0.508, P < 0.001) with BDI-II score.

Conclusion: Overall, findings of this study indicate that certain dietary patterns are associated with depression in adolescent Iranian girls. However, more studies are needed to further confirm these findings.

Keywords: Adolescent; Depression; Diet; Factor analysis; Iran.