Professor Masahiro Hashizume

Speciality / Research theme / Keywords
Environmental Epidemiology, Climate Change
Programme director
Masters ProgrammeDoctoral Programme


MSc, MD, PhD

Personal/work Web page addresses


  • School of Tropical Medicine and Global Health, Nagasaki University
  • Department of Paediatric Infectious Diseases, Institute of Tropical Medicine (NEKKEN), Nagasaki University
  • Department of Tropical Paediatric Infectious Diseases, Graduate School of Biomedical Sciences, Nagasaki University


I am a physician and an environmental epidemiologist with particular interest in the health impacts of climate change and climate variability. I had my residency training in paediatrics in Tokyo, 1996-1999, then received my master’s degree in international health from Univ. of Tokyo (2001), MSc in Environmental Health and Policy from London School of Hygiene and Tropical Medicine (LSHTM) (2003), and PhD from the Univ. of London (LSHTM, 2007). I have served as an advisor or expert for international organizations (e.g., WHO, IPCC), governmental committee (MoE), Editorial Review Board of Environmental Health Perspectives and Editor-in-Chief of Tropical Medicine and Health.


I am a co-organizer of “Epidemiology” and “Statistics for Population Health” modules in semester 1 and 3. I also teach individual sessions on a topic of health impacts of climate change for the Global Environment and Health module.


My research interests extend over a range of issues in environmental epidemiology. The current research topics, which we work in collaboration with both the international and Japanese colleagues, focus mainly on health impacts of atmospheric environmental changes including climate variability, global climate change and transboundary and local air pollution in high-, middle- and low-income countries. Ongoing projects include:

  1. Short-term association between ambient temperature (heat, heat extremes and cold) and mortality in Japan and other parts of the world
  2. Effects of ocean-atmosphere interaction phenomenon and local weather on vector-born, water-born and other infectious diseases in tropical and sub-tropical settings
  3. Development of malaria early warning system in Southern Africa
  4. Health effects of long-ranged transported air pollution in the East and Southeast Asia
  5. Respiratory health effects of airborne particulate matter and its chemical compositions and sources

The country/countries where you work currently

  • Bangladesh
  • Japan
  • Kenya
  • South Africa
  • UK
  • Vietnam

Five MOST IMPORTANT/INTERESTING recent publications

  1. Chung Y, Yang DW, Gasparrini A, Vicedo-Cabrera AM, Ng CFS, Kim Y, Honda Y, Hashizume M. Changing susceptibility to non-optimum temperatures in Japan, 1972-2012: the role of climate, demographic and socio-economic factors. Environ Health Perspect. 2018DOI:10.1289/EHP2546. [Full text]
  2. Kim Y, Gasparrini A, Hashizume M, Honda Y, Ng CFS, Armstrong B. Heat-related mortality in Japan after the 2011 Fukushima disaster: An analysis of potential influence of reduced electricity consumption. Environ Health Perspect. 2017;125(7):077005. doi: 10.1289/EHP493. [Full text]
  3. Nakamura T, Hashizume M, Ueda K, Shimizu A, Takeuchi A, Kubo T, Hashimoto K, Moriuchi H, Odajima H, Kitajima T, Tashiro K, Tomimasu K, Nishiwaki Y. Asian dust and pediatric emergency visits due to bronchial asthma and respiratory diseases in Nagasaki, Japan. J Epidemiol. 2016;26(11):593-601. [Full text]
  4. Imai C, Armstrong B, Chalabi Z, Mangtani P, Hashizume M. Time series regression model for infectious disease and weather. Environ Res. 2015;142:319-327. [Full text]
  5. Gasparrini A, Guo Y, Hashizume M, Lavigne E, Zanobetti A, Schwartz J, et al., Mortality risk attributable to high and low ambient temperature: a multi-country study. The Lancet. 2015;386(9991):369-375. [Full text]

Link to other publications