The changes associated with the excessive expansion of urban settlements, the technical and scientific development, the changes of demographic indexes, and the use of new energetic sources and new materials have transformed the contemporary world into a huge turbulence characterized by highest rates of environmental damage: deforestation, desertification, erosion, droughts, floods and industrial and domestic pollution. The global environmental problems and their causes must not be excluded in the analysis of the current development model, which is dependent and peripheral and a factor of instability and conflict between the human society and the environment.
The environment is evidently sensitive when the human actions are risking the quality, constancy, and durability of the ecosystem and the human race wellbeing, where the health is one of its vital aspects. The human being has been in the middle of this net, merging his biologic and social complexity as creator, culture, and development promoter. Environment and human health could be understood as a convergence: environmental health. Its reciprocity is established by physical, chemical, biological, social, psychosocial, and environmental factors.
