AUTHOR=Zhang Xiaoyue , Zhang Lanchao , Liu Yihua , Lin Yuxin , Yang Xiaochen , Gong Litong , Chang Chun TITLE=The relationship between unhealthy lifestyle patterns and depressive symptoms among residents in Beijing, China: A community-based cross-sectional study JOURNAL=Frontiers in Public Health VOLUME=Volume 11 - 2023 YEAR=2023 URL=https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2023.1055209 DOI=10.3389/fpubh.2023.1055209 ISSN=2296-2565 ABSTRACT=Depression is a prevalent mental disorder that has an irreversible impact on people's health status. Unhealthy lifestyles are modifiable and influence mental health significantly. The purpose of this study was to explore the impact of different unhealthy lifestyles and their patterns on depressive symptoms. The data for this study were obtained from the 2017 Community Diagnostic survey in Daxing District, Beijing. It was a cross-sectional study that included 6252 samples. The Patient Health Questionnaire version 9 was used to measure depressive symptoms, and the questionnaires were modified based on National Chronic Disease Surveillance to investigate five unhealthy lifestyles, including sleep deprivation, inadequate intake of fruits and vegetables, physical inactivity, smoking, and excessive alcohol consumption. Respondents were assigned 1 point for each of their unhealthy patterns, and their overall unhealthy lifestyle scores were calculated. The total scores of unhealthy lifestyles ranged from 0 to 5. Descriptive analyses and Firth's logistic regression model were used to analyze the relationship between unhealthy lifestyle patterns and depression symptoms. It was found that 12.1% of the participants had depressive symptoms. The respondents whose unhealthy lifestyle scores were 2 (OR1.47, 95%CI:1.03 to 2.15), 3 (OR2.30, 95%CI:1.58 to 3.43), 4 (OR 3.00, 95%CI:1.95 to 4.71), or 5 (OR4.10, 95%CI:2.10 to 7.83) were more likely to experience depressive symptoms in comparison with those whose unhealthy lifestyle scores were 0, and the OR increased with the unhealthy lifestyle scores. When the participants had 3 or more unhealthy lifestyles at the same time, different combination patterns of unhealthy lifestyles showed a different effects on depression. The OR was 2.97 (95%CI:1.43 to 5.87) for the combination of sleep deprivation - insufficient intake of fruit and vegetables – excessive alcohol consumption, and was 2.79 (95%CI:1.47 to 5.04) for the combination of sleep deprivation – insufficient intake of fruit and vegetables – physical inactivity - excessive alcohol consumption. The depressive symptoms detection rate was increased among the respondents with increasing numbers of unhealthy lifestyles. Among the five unhealthy lifestyles, sleep deprivation and the inadequate intake of fruits and vegetables may have a greater impact on depression.