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Objective: Consumption of soft drinks has become a serious public health issue worldwide. However, prospective evidence is limited regarding the relationship between soft drink consumption and depression, especially in Asia. The aim of this study was to investigate the prospective association between soft drink consumption and the development of depressive symptoms., Methods: We evaluated an occupational cohort of 935 adults in Japan (2012-2016), who were free from depressive symptoms at baseline and attended a 3-y follow-up assessment. Soft drink consumption was assessed using a self-administered diet history questionnaire. Depressive symptoms were assessed using the Center for Epidemiologic Studies Depression scale. Odds ratios (ORs) and 95% confidence intervals (CIs) were estimated from multivariate logistic regression analysis controlling for sociodemographic, lifestyle, dietary, and occupational covariates., Results: Over the 3-y study period, 16.9% (158 cases) of the study participants reported depressive symptoms. Higher soft drink consumption was associated with higher odds of depressive symptoms. The multivariable-adjusted OR was 1.91 (95% CI, 1.11-3.29; P trend  = 0.015) when comparing soft drink consumption of ≥4 cups/wk with consumption of <1 cup/wk., Conclusion: The present results suggested that greater consumption of soft drinks would increase the likelihood of exhibiting depressive symptoms., (Copyright © 2020 Elsevier Inc. All rights reserved.)