As the population ages, this book reveals how divides that are apparent through childhood and working life change and are added to in later life. Two internationally renowned experts in ageing look beyond longstanding factors like class, gender and ethnicity to explore new social divisions, including contrasting states of physical fitness and mental health. They show how differences in health and frailty are creating fresh inequalities in later life, with significant implications for the future of our ageing societies. This accessible overview of social divisions is essential reading for those interested in the sociology of ageing and its differences, diversities and inequalities.