Book excerpt: Using INDEPTH's multi-site network to provide new demographic insights into population variables, this book provides a new perspective on migration, health and livelihood's interaction over time. The book starts with providing a conceptual and methodological framework to inform the epidemiological studies that are clustered into two themes, showing the dynamics of migration with either household livelihoods or individual health outcomes. The findings demonstrate the important cross-national regularities in human migration. The contributed chapters also exemplify the fact that the impacts of migration can be either positive or negative for sending and/or receiving communities, depending on the issues at hand and the type of migration under consideration.