Health data science is a multidisciplinary research field that integrates computational, statistical, and informatic approaches for the systematic analysis of complex health-related data. It investigates diverse data sources, including clinical records, genomics, public health surveillance, and patient-generated information, with the aim of discovering patterns, predicting outcomes, and generating knowledge to improve health, optimize healthcare delivery, and inform policy. Its significance lies in leveraging data-driven methodologies to address pressing challenges in medicine and public health, facilitating personalized interventions and population-level strategies.