title: Unhealthy lifestyle, poor mental health, and its correlation among adolescents: a nationwide cross-sectional survey.
abstract: OBJECTIVE
  The objective was to study the relationship between mental health and lifestyles of adolescents using samples representative of Japanese adolescents nationwide.
  
  
  METHODS
  The survey was conducted between December 2004 and January 2005 among students enrolled in randomly selected junior and senior high schools. Self-administered questionnaires addressed lifestyles, sleeping habits, and mental health status. Of 103 650 questionnaires collected, 85 158 were analyzed.
  
  
  RESULTS
  Population characteristics associated with poor mental health were being female, being a senior high school student, skipping breakfast, not participating in extracurricular activities, not consulting parents about personal matters, parental smoking, students' smoking or alcohol use, poor subjective sleep assessment, and short or long sleeping duration.
  
  
  CONCLUSIONS
  Smoking and anxiety disorders are associated with an elevation in acculturative stress in adolescents. Prepossessing adolescents are in subclinical depression. Results suggest that lifestyles approaches in preventions that target students can be effective in reaching high-risk populations.
authors: National Institute of Public Health, Saitama, Japan takeost@niph.go.jp.
authors: Takeo
authors: T
authors: Tanihata
authors: Fukushima Medical University, Fukushima, Japan.
authors: Hideyuki
authors: H
authors: Kanda
authors: Tottori University, Tottori, Japan.
authors: Yoneatsu
authors: Y
authors: Osaki
authors: Nihon University, Tokyo, Japan.
authors: Takashi
authors: T
authors: Ohida
authors: Seitoku University, Matsudo, Chiba, Japan.
authors: Masumi
authors: M
authors: Minowa
authors: National Institute of Mental Health, Kodaira, Japan.
authors: Kiyoshi
authors: K
authors: Wada
authors: Suzuki Medical Office, Hyama Cho, Kanagawa, Japan.
authors: Kenji
authors: K
authors: Suzuki
authors: National Institute of Public Health, Saitama, Japan.
authors: Kenji
authors: K
authors: Hayashi
mesh_terms: D000293:Adolescent; D000428:Alcohol Drinking / Q000453:epidemiology; D003430:Cross-Sectional Studies; D003863:Depression / Q000453:epidemiology; D005260:Female; D006184:Habits; D006801:Humans; D008019:Life Style; D008297:Male; D001523:Mental Disorders; D008603:Mental Health; D012309:Risk-Taking; D012907:Smoking / Q000453:epidemiology; D013334:Students; D011795:Surveys and Questionnaires