Why AI-Driven Prevention Will Reshape European Healthcare Systems

European healthcare systems are currently facing profound structural pressures caused by demographic aging, chronic diseases, rising costs, labour shortages and increasing expectations from patients and citizens. The sustainability of universal healthcare, which has historically represented a cornerstone of European welfare, is now threatened by a combination of structural fragilities, long-term epidemiological trends and persistent inefficiencies. Artificial Intelligence, however, is emerging as a transformative lever able to support large-scale preventive strategies, shifting infrastructures from a reactive care orientation to a proactive public-health logic. The transition will not depend on replacing medical professionals with algorithms, but rather on building Human-AI ecosystems where predictive analytics, digital screening, risk stratification and real-time population monitoring are integrated into governance models, organisational rules and service design. Preventive systems based on AI can enable early detection of chronic conditions, optimise triage, support population-wide interventions and ultimately mitigate the escalating cost of late-stage treatments. A systematic use of AI-supported prevention could reshape the trajectory of European healthcare by acting on epidemiological drivers before their clinical manifestation, reducing hospitalisation, improving resilience and strengthening equity. Yet, this transformation is not purely technological: major organisational, governance and regulatory reconfigurations are required to ensure trusted, explainable and socially accepted healthcare solutions. The real challenge ahead lies in designing human-centric prevention that incorporates ethical, social and managerial principles, securing accountability and transparency while reinforcing the social legitimacy of digitally augmented public health.