Prof. Kazuhiko Moji is dean of the Graduate School of Tropical Medicine and Global Health. He has been studying human ecology of people living in various environments in Asia, Africa and South America. Based on intensive field work in rural communities, he studied demographic events (death, pregnancy, birth and in/out migration), time-allocation of human activities, their interaction with environment, food acquisition, diet, energy and nutrient intake, and energy output. Then, he started to study health ecology of parasitic diseases such as schistosomiasis haematobium in Kenya, malaria in Indonesia and Lao P.D.R. and liver fluke infection in Lao P.D.R. He has been interested in ecohealth/human ecology approaches (non-pharmaceutical approaches) to reduce the burden of these parasitic diseases and to accelerate health transition.