Abstract
Human Digital Twins (HDTs) are rapidly emerging as a transformative innovation in personalized healthcare and predictive medicine. Through the integration of real-time, high-resolution data from multiple sources like genomics, wearable devices, electronic health records, and behavioral inputs, HDTs create virtual replicas of individuals that can simulate, predict, and optimize health outcomes. This article explores the conceptual framework that underpins HDTs, their current and potential applications in personalized healthcare, as well as their role in advancing predictive medicine and population health. It also addresses the technological and ethical challenges associated with HDT development, including data privacy, interoperability, algorithmic bias, and regulatory gaps. Furthermore, the article outlines future directions, and emphasizes the importance of multi-omics integration, cognitive modeling, edge computing, and interdisciplinary collaboration. Through a comprehensive analysis, this study highlights HDTs as a paradigm shift with the potential to revolutionize healthcare delivery, improve patient outcomes, and enable a more proactive, data-driven model of care.
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