Federal field investigations of potential environmental and occupational hazards are handled through the Center for Environmental Health and the National Institute for Occupational Safety and Health, which are components of the Centers for Disease Control, within HHS. General environmental health research and toxicological testing are directed through the National Institutes of Health and the National Toxicology Program, also within HHS. Comparable regulations and agencies at state and local levels, working with their federal counterparts, play a crucial role as well. International coordination of environmental and occupational control activities in many countries is guided through the World Health Organization. In the developing parts of the world, such activities are of critical importance as modern industrialization proceeds in the face of poverty and growing populations. Current trends in research in this field focus on the relation of low-dose exposures to human health, the influence of environmental toxins on both male and female reproductive functions, and the potential health implications of subclinical indications of biological damage .
cancer effects frequencies handled human home practices regulations respond safety skills system dating services
