Book excerpt: This book is the first to present a regional analysis of climate change and human health, focusing on geographically and socio-economically distinct countries of South and Southeast Asia. It has a major focus on India, Indonesia, Bangladesh, Malaysia, Thailand, Nepal and Taiwan. Climate change is a significant and emerging threat to human health. lt represents a range of environmental hazards and will affect populations in both the developed and developing countries. In particular, it affects the regions where the current burden of climate-sensitive diseases are high, which is the case in South and Southeast Asian countries.