This chapter explores the ever-changing environment of wearable health technology and its critical role in transforming modern healthcare. It goes into the historical history of these devices, tracking their path from basic fitness trackers to sophisticated health-monitoring systems, focusing on proactive and preventative health management. The present scene emphasizes the range and breadth of accessible wearable technology in healthcare. It discusses sensor improvements, biometric monitoring, and wireless communications. These advancements have significantly improved the precision and effectiveness of monitoring of numerous health markers. This chapter also thoroughly reviews the use of wearable devices in remote patient monitoring, emphasizing their revolutionary influence on chronic illness management and senior care through real-world case studies. Furthermore, investigates the integration of wearable device data into healthcare systems for real-time monitoring, covering technological and infrastructure issues.