Abstract
Adolescent depression is a significant public health concern. Although skipping breakfast is associated with depressive symptoms in adolescents, the effects of dietary patterns on their depressive symptoms remain unknown. Therefore, this study aims to determine whether dietary patterns are associated with depressive symptoms among junior and senior high school students in Japan. A total of 441 junior high school students and 417 senior high school students participated in this study. The Center for Epidemiologic Studies Depression scale (CES-D) was used to measure the participants’ depressive symptoms. We surveyed the participants’ breakfast consumption pattern, as well as their general dietary patterns (meat, fish, green and yellow vegetables, milk and dairy products, and fruits), using a self-report questionnaire. The results indicated that the senior high school students had a significantly higher CES-D score than the junior high school students. We found negative and significant partial correlations between regular consumption of breakfast and depressive symptoms, and between regular consumption of green and yellow vegetables and depressive symptoms in both junior and senior high school students, after controlling for age, sex, and sleep duration. Furthermore, a one-way analysis of covariance (ANCOVA) revealed that adolescents who consumed green and yellow vegetables every day (one or more times per day) had significantly lower depressive symptoms than those from the “Never/1–2 times a week” group. The findings of this study reveal that the regular consumption of green and yellow vegetables is associated with lower depressive symptoms in adolescents, that is, the consumption of green and yellow vegetables may be vital in the context of adolescents’ mental health.
Highlights
At the global level, 10%–20% of children and adolescents experience mental disorders, and 50% of these mental illnesses begin by the age of 14
We examined the effects of eating breakfast and dietary patterns on junior high school students (n = 441) and senior high school students (n = 417) in two cities in Japan
The consumption of green and yellow vegetables was negatively correlated with depressive symptoms in both junior and senior high school students
Summary
10%–20% of children and adolescents experience mental disorders, and 50% of these mental illnesses begin by the age of 14. Psychological factors are the leading cause of mental disability in young people at the global level. Impacts of vegetable consumption on adolescent mental health affect children’s development adversely, including their academic capabilities, as well as their capacity to live fulfilling and productive lives. This is because the human brain continues to develop throughout childhood and adolescence [2, 3]. Children with mental disorders face major challenges; they tend to be stigmatized, isolated, and discriminated against. They typically lack access to health care and education [1]. Depression is the most common mental health disorder among young people [1, 4, 5]
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