Emerging issues
Endocrine Disrupting Chemicals (EDCs)
Over the last two decades there has been growing concern and lack of scientific consensus about the potential effects of a number of environmental chemicals that have the potential to alter the normal functioning of the endocrine system. These chemicals, often called endocrine disruptors (EDCs) have been suspected to be associated with altered reproductive function in males and females; increased incidence of breast cancer, abnormal growth patterns and neurodevelopmental delays in children, as well as changes in immune function. Effects of exposure to EDCs in a variety of wildlife species have also been reported.
In response to these concerns, WHO published a comprehensive Global Assessment of the State of the Science of Endocrine Disruptors in 2002. The assessment concluded that although the evidence that human health has been adversely affected is weak, there is sufficient evidence that adverse effects have occurred as a result of exposure to EDCs in some wildlife species. Therefore, because of continuing concerns, studies on the potential effects posed by these chemicals should remain a high global priority. There is in particular an urgent need for studies in infants and children since exposure during critical periods of development may have irreversible effects.