The integration of Internet of Things (IoT) technology in healthcare has led to transformative changes in patient care, clinical decision-making, and healthcare delivery. This paper provides a comprehensive overview of IoT applications in healthcare, including remote patient monitoring, clinical decision support systems, wearable devices, and smart hospitals. Key findings from successful implementations of IoT in healthcare are summarized, highlighting the impact on patient outcomes, operational efficiency, and cost savings. Lessons learned and best practices for implementing IoT solutions are discussed, emphasizing the importance of stakeholder engagement, data security, interoperability, usability, and scalability. Recommendations for future research and development in IoT healthcare are provided, focusing on areas such as security, interoperability standards, usability, predictive analytics, and patient-centered care. Additionally, a glossary of terms, resources for further reading, and an index are included to provide additional context and guidance for readers interested in exploring the topic further.