Abstract
The present paper examines the historical evolution of health impact assessments as part of the environmental assessment process. The development of a coherent public health framework must be based on the model of determinants of health, integrating toxic and infectious risks and social impacts of projects. The integration of common concepts, processes and methodologies from the area of public health and social impact assessment challenges the quantitative model approach to risk assessment. The expert-driven risk assessment is transformed into a social learning process where local knowledge and scientific input foster a dialogue among stakeholders. The issue-oriented, iterative and participative assessment process may be applied to the health impact assessment of public policies. Sustainable development with its social objectives of empowerment, participation, equity, poverty alleviation, social cohesion, population stability and institutional development is an appropriate framework for conducting health impact assessments.