Diet quality and depressive symptoms among workers

Area of Science:

• Nutrition and Mental Health
• Occupational Health
• Epidemiology

Background:

• The relationship between diet quality and mental health remains unclear.
• Investigating adherence to national dietary guidelines is crucial for public health.
• Japanese dietary guidelines, represented by the Food Guide Spinning Top, offer a framework for healthy eating.

Purpose of the Study:

• To prospectively examine the association between adherence to Japanese dietary guidelines and depressive symptoms.
• To assess the impact of diet quality on mental well-being in a working population.
• To provide evidence-based insights into dietary recommendations for mental health.

Main Methods:

• A prospective cohort study involving 909 Japanese workers.
• Dietary intake assessed using a validated self-administered diet history questionnaire.
• Adherence to Japanese Food Guide Spinning Top measured, and depressive symptoms assessed using the Center for Epidemiologic Studies Depression (CES-D) scale.

Main Results:

• After 3 years, 16.8% of workers developed depressive symptoms.
• No significant association was found between adherence to Japanese dietary guidelines and depressive symptoms.
• Odds ratios for depressive symptoms did not significantly differ across adherence tertiles (P for trend = 0.41).

Conclusions:

• Diet based on the Japanese Food Guide Spinning Top was not prospectively associated with the risk of depressive symptoms.
• Findings suggest that adherence to these specific dietary guidelines may not directly influence depressive symptom development in this population.
• Further research is needed to explore other dietary factors or lifestyle interventions for mental health.