Department of Public Health
Professor & chairTakeshi Tanigawa
My research focus is on the epidemiological studies of sleep disorders, cardiovascular disease and occupational medicine. I established the Obstructive Sleep Apnea Syndrome (OSAS) screening system for commercial vehicle drivers in Japan and contributed to the occupational health and safety for truck drivers. I also have been working as a part-time occupational physician at the Daiichi and Daini Fukushima nuclear power plants at the Tokyo Electric Power Company for over 20 years. It brought my attention to support and to provide mental health care for the power plant workers after the accident of the Daiichi nuclear power plant after the Great East Japan Earthquake in March, 2011, and my research group presented a part of the findings in the JAMA (Psychological distress in workers at the Fukushima nuclear power plants. 2012; 308: 667-669). Our research group is currently examining psychomotor vigilance testing and autonomic nervous system testing in relation to BMI and OSAS as potential screening tools for detecting sleep disorders in the occupational as well as community setting. Our current research interest is also to find the OSAS prevalence among elementally school children as well as the association between psychomotor vigilance testing and Attention Deficit Hyperactivity Disorder and OSAS.
Principal Investigators1) Hiroo Wada (Associate Professor), Ai Noda (Associate Professor), Kiyohide Tomooka (Assistant Professor)
Our research interest is to determine the risk factors for Non-communicable disease (e.g., cardiovascular disease, cancer, chronic obstructive pulmonary disease). We have found that sleep disordered breathing (SDB) is one of the risk factors for cardiovascular disease as well as traffic accidents in Japan. Recently, SDB have found to be associated with psychosocial factors such as social economic status (i.e., education level, occupational status) and social network (i.e., marital status), towards the advent of the super-aged society. Cigarette smoking, heavy alcohol intake, as well as infection such as sinus infections are also known risk factors for sleep disorders. Our research goal is to find the pathological mechanisms between SDB, risk factors and Non-communicable disease using occupational- as well as the large community-based datasets.2) Motoyuki Yuasa (Associate Professor)
My research group encompasses a wide range of global health issues. Current research topics include, Prevention and Control of Non-Communicable Diseases in Northern Thailand, Health Promotion Projects in Bolivia, and School-based Health Education Projects in multiple settings.
We also work on global health policy analysis, for example, on development of the evaluation framework for Public-Private Partnership projects in global health, and Japan International Cooperation Agency (JICA)’s contribution to health system strengthening.
In addition to international research activities, we conducted a study tour every summer, leading a group of medical students and young researchers from Japan to the Mahidol University in Thailand to study public health issues in developing countries.
Our research interest is to investigate sick leave (SL), return to work (RTW), stay at work (SAW) among cancer survivors, stroke survivors, heart attack survivors, pregnant women, and women with fertility treatments. We have cohort database for cancer survivors (J-SAR Study etc), pregnant women (MOM Study with Dokkyo University), and women with fertility treatments (J-FEMA Study) etc. According to our previous studies, 47.1% of cancer survivors returned to work full time within 6 months of their initial day of SL, and 62.3 % by 12 months. The cumulative RTW rate varied significantly by cancer type. Of workers who returned to work after their first episode of SL after cancer, more than 50% continued to work after 5 years in large-scaled companies. We developed "Evidence Book for survivors", "Support guide for cancer survivors" etc, supported by Health Labour Sciences Research Grant, Japan (Endo-Han) etc.
- Muraki I, Tanigawa T, Yamagishi K, Sakurai S, Ohira T, Imano H, Kitamura A, Kiyama M, Sato S, Shimamoto T, Konishi M, Iso H, Investigators C. Nocturnal intermittent hypoxia and the development of type 2 diabetes: The circulatory risk in communities study (CIRCS). Diabetologia 2010;53:481-488.
- Shigemura J, Tanigawa T, Saito I, Nomura S. Psychological distress in workers at the fukushima nuclear power plants. JAMA 2012; 308: 667-669.
- Tanigawa T. Obstructive sleep apnea: its prevention and screening may contribute to the prevention of hypertension, diabetes and cardiovascular disease. EPMA J. 2011; 2: 83-89.
- Wada H, Akiyama Y, Takeda H, Nakamura M, Takizawa H. Social isolation in patients with chronic respiratory failure (CRF), undergoing long-term oxygen therapy (LTOT). J Am Geriatr Soc 2014; 62: 1807-1808.
- Ikeda A, Iso H, Toyoshima H, Fujino Y, Mizoue T, Yoshimura T, Inaba Y and TamakoshiA. Marital status and mortality among Japanese men and women: The Japan Collaborative Cohort Study. BMC Public Health 2007; 7: 73.
- Yuasa M, Osato K, Miranda C, Condore J, Siles R. Cross-sectional analysis of self-efficacy and social capital among participants in a community-based healthy village project in Santa Cruz, Bolivia. BMC Internal Health and Human Right. 2015;15:15.
- Yuasa M, Yamaguchi Y, Imada M. Contribution of Japan International Cooperation Agency health-related projects to health system strengthening. BMC Internal Health and Human Right. 2013; 13: 39.
- Maruyama K, Sato S, Ohira T, Maeda K, Noda H, Kubota Y, Nishimura S, Kitamura A, Kiyama M, Okada T, Imano H, Nakamura M, Ishikawa Y, Kurokawa M, Sasaki S, Iso H. The joint impact on being overweight of self reported behaviours of eating quickly and eating until full: cross sectional survey. BMJ 2008; 337: a2002.
Department of Public Health, Juntendo University School of Medicine,
2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan