What is a `healthy' lifestyle? Which is more significant: the social circumstances in which people live, or lifestyle habits such as exercise or smoking? Health and Lifestyles is the first description of a large and representative survey of the British population asking just those questions. It examines the findings, and considers issues such as measured fitness, declared health, psychological status, life circumstances, health-related behaviour, attitudes and beliefs. Providing firm evidence of the importance of social circumstances and patterns of health-related behaviour, Health and Lifestyles is an important contribution to current debate, revealing the levels of inequality in health in Britain today.