This book presents innovative solutions for disease management, elderly care, rehabilitation, surgical decision-making, and health data security. This book explores the transformative impact of Artificial Intelligence (AI), machine learning, and smart technologies on modern healthcare. Addressing wearable devices, digital twins, assistive technologies, and ethical AI implementation, the book highlights how digital advancements enhance diagnostics, treatment personalisation, and patient outcomes. With contributions from leading experts, this collection serves as a vital reference for healthcare professionals, researchers, and policymakers shaping the future of patient-centred, data-driven medicine. .