Next-Generation Wearable Biosensors for Real-Time Health Monitoring: A Comprehensive Review

Abstract

Wearable biosensors are rapidly becoming a vital part of modern healthcare. These devices continuously monitor various physiological and biochemical signals from the human body, providing real-time feedback for early disease detection, personalized treatment, and overall health management. Traditional wearable devices such as fitness trackers and smartwatches have already gained popularity, but the next generation of wearable biosensors promises to go beyond basic health monitoring. These new systems are capable of detecting biomarkers like glucose, lactate, cortisol, and hydration levels, in addition to vital signs such as heart rate, body temperature, and oxygen saturation. They combine advances in flexible electronics, nanomaterials, wireless communication, and data analytics to create smart, non-invasive, and user-friendly health monitoring solutions. This comprehensive review explores the latest developments in next-generation wearable biosensors. It first describes the key technologies behind these devices, including types of sensors, materials, and energy sources. Then, it examines current applications in areas such as chronic disease management, fitness, mental health, and infectious disease detection. The paper also discusses the major challenges in this field, including device reliability, data accuracy, user comfort, regulatory approval, and data privacy. Finally, the review presents future directions, such as the integration of artificial intelligence, self-powered biosensors, multi-analyte detection, and fully autonomous wearable systems. The aim of this paper is to provide researchers, engineers, and healthcare professionals with an in-depth understanding of how next-generation wearable biosensors are reshaping real-time health monitoring. With continued innovation and interdisciplinary collaboration, these technologies have the potential to revolutionize how healthcare is delivered shifting from reactive to proactive and preventive care.