[Towards a disruptive preventive approach for sustainable healthcare systems].

Faced with the multiple challenges impacting the Belgian healthcare system - notably the aging of the population, the increase in chronic diseases and growing social inequalities in health - the development of a disruptive preventive approach rooted in health promotion is essential to address the population's health problems in a cross-sectional and intersectoral way. However, the scant attention paid to prevention and promotion in the Belgian political landscape (only 3 % of healthcare expenditure), accentuated by the fragmentation of its deployment between the various political-institutional entities (Federal Authority, Communities and Regions), represents a significant limitation. New opportunities, supported in particular by "4P medicine", are paving the way for a modernization of preventive approaches. However, this new way of conceiving prevention will only be beneficial to the community, in all its diversity and complexity, if it re-engages with the fundamentals of health promotion.