Since ancient times, people have worked, lived and multiplied under a wide variety of environmental conditions. According to Chinese medical theory, human health is affected by a lack of equilibrium between body and its surrounding environment. This is especially the case where the ecology of the environment is abnormal. Consequently, geographic variability has long been an important aspect of health studies in both Eastern and Western cultures. This has been expressed in a variety of approaches ranging from geographic pathology to medical ecology, as well as disciplines such as geographical epidemiology, biometeorology, geomedicine, and so forth. The course provides an introduction to the concepts and techniques in the discipline of medical geography and to examine recent trends in the geographic variation of health.