Wearable biosensors in modern healthcare: Emerging trends and practical applications

• Tears. • Epidermal fluids, • Interstitial fluid and exhaled breath Wearable biosensor systems represent a significant breakthrough in the life sciences, offering real-time monitoring and quantitative assessment of various human health parameters. The escalating demand for continuous and immediate surveillance of both acute and chronic conditions, compounded by constraints in clinical infrastructure, has propelled extensive investigation into wearable biosensors. These systems have emerged as pivotal tools for furnishing physiological insights and facilitating non-invasive monitoring. They monitor various analytes through the analysis of sweat, epidermal, Interstitial fluids, breath and tears, and easily incorporated into flexible substrates ensuring long-term wear and continuous monitoring. However, these biosensors penetrate deeper into the body's fluid networks, providing a systemic approach to continuous monitoring of biomarkers, which is particularly useful for individuals with metabolic disorders. This comprehensive review explores recent trends and diverse applications of wearable biosensors. These applications empower individuals to dynamically assess their well-being, enabling informed healthcare decisions tailored to individual needs. The convergence of these approaches in wearable biosensors highlights a comprehensive approach to understand individual health. This integration holds the promise of transforming healthcare practice by providing continuous observance and remote monitoring. The result has been a paradigm shift towards active, personalized health care, leading to improved health outcomes and improved quality of life