This chapter provides a comprehensive overview of the drivers and consequences of family violence across the lifespan, integrating interdisciplinary evidence to inform nursing practice. It examines neurobiological, psychological and societal risk factors contributing to the perpetration of violence against children, intimate partner violence and abuse of older adults. Particular attention is given to the impact of early life trauma on brain development, emotion regulation and behavioural outcomes, as well as societal norms that perpetuate violence through devaluation and marginalisation. The chapter also addresses the physical, physiological and mental health consequences for those who experience family violence, highlighting gendered and racialised disparities. Evidence-based interventions, including nurse-led programmes, technology-based tools and trauma-informed care, are reviewed to illustrate opportunities for primary, secondary and tertiary prevention. Implications for nursing research and practice emphasise the need for holistic, culturally safe and developmentally informed responses to reduce violence and mitigate its health effects across diverse populations.