In Nigeria, like many developing nations, the resultant environmental problems are legion: aggravated soil erosion, flood disasters, salinization or alkalisation, and the desertification due to the effects of shifting agriculture on fragile soils, forest clearing in erosion prone and flood prone areas, bush burning, animal over-grazing and poor construction and maintenance of roads and irrigation system; pollution of water, air and land due to improper disposal of domestic and industrial wastes; pollution through oil spillage; pollution from noise; proliferation of slums in urban areas, unsanitary and unsafe housing; congestion of traffic and houses in urban areas and lack of open spaces for active outdoor recreation. All these affect human well-being (the most affected groups are women and children) especially the health and socio-economic well-being of the people of Nigeria in particular and in the world as a whole. Therefore, this paper highlights the dimensions, nature and characteristics of these phenomena. And further examines the implications of the environmental degradation on the health and socio-economic well-being of the people of the Nigeria.