This book examines the concept of power. It begins by pointing to its multi-dimensional definition and points to different sociological interpretations of its conception and social practice. The book explores power in two contexts: firstly, micro. It explores professional relations with older people to illuminate how power changes, shifts in emphasis and stabilises in everyday encounters. Secondly, the book explores the macro features of power. In particular, the book explores the power of aging populations and the macro impact it has on individuals, nation states and the globe. Thus, highlighting that power is an essential concept to understand contemporary arrangements in modern society.