It has been widely recognized that poor health is an important cause of poverty, especiallyamong the low- and middle- income countries. One of the reasons is the absence of publicfinancial protection against the medical consumption risk in these countries. This Phd dissertationis dedicated to discern the role that health insurance could play in the organization of healthfinancial protection system. The dissertation is composed of two parts. The first part discusses theproblems linking to the financing to medical consumption from a global point of view. Chapter 1brings theoretical discussions on three topics: 1) the specialties of medical consumption risks andthe difficulties in using private health insurance to manage medical consumption ri...