In the complex landscape of modern healthcare and rehabilitation sciences, the family unit emerges as the fundamental cornerstone that shapes individual health outcomes, treatment efficacy, and long-term rehabilitation success. This intricate relationship between family dynamics and health management has evolved significantly over the past several decades, transforming our understanding of how family structures influence everything from genetic predisposition to disease patterns to the effectiveness of therapeutic interventions. The family unit serves not merely as a biological entity but as a sophisticated social system that creates, maintains, and transmits health behaviors, beliefs, and practices across generations. Within the context of physiotherapy and rehabilitation sciences, understanding these family dynamics becomes particularly crucial as practitioners increasingly recognize that successful treatment outcomes depend not only on individual patient compliance but on the broader support system that the family provides. This chapter explores the multifaceted nature of family influence on health outcomes, examining how...