... Ohta A, Tsuda T, Yasuda N, Babazono A, Yamamoto E: Smoking and mental health: cross-sectional and cohortstudies in an occupational setting in Japan. Prev Med 2001, 32:371-375.Tanaka et al. ... Health, Gunma University Graduate School ofMedicine, Maebashi, Japan.2Faculty of Education, University of the Ryukyus,Okinawa, Japan.3NPO International Ecohealth Institute, Isesaki, Japan.Authors’ ... Tanaka1, Yosiaki Sasazawa2, Shosuke Suzuki3, Minato Nakazawa1, Hiroshi Koyama1*AbstractBackground: Depression is a common mental disorder. Several studies suggest that lifestyle and...