The 12th International Conference on Health Impact Assessment (HIA): New Issues Arising from the Evolution of the Practice ABOUT THE NATIONAL COLLABORATING CENTRE FOR HEALTHY PUBLIC POLICY The National Collaborating Centre for Healthy Public Policy (NCCHPP) seeks to increase the expertise of public health actors across Canada in healthy public policy through the development, sharing and use of kno [...] The 2012 Conference addressed the themes of Health in All Policies and HIA institutionalization, and took stock of the diversity of the practice and what we have learned so far about its effectiveness. [...] Increased awareness of the impact of such problems on the quality of life of populations and on the prosperity of countries has put this urgently needed approach back on the agenda. [...] In the same year, the amended Constitution of the Kingdom of Thailand specified the responsibility of project promoters regarding impact assessments on the environment and on the health of the population affected. [...] National Collaborating Centre for Healthy Public Policy 5 Institut national de santé publique du Québec The 12th International Conference on Health Impact Assessment (HIA): New Issues Arising from the Evolution of the Practice 3 A DIVERSE PRACTICE As a result of the growing body of knowledge about health determinants and the influence of various schools of thought in the public health field, HIA i