Environmental illness is not well understood, but certainly exists--though used to be far more contested than it is now. There are several types of documented environmental illnesses, although more research is needed into many of these types of illness thought to be triggered by environmental factors or chemicals.   Which chemicals are thought to cause environmental illness? Chemicals such as those in cigarettes, asbestos, wood burning, poor quality or unsafe drinking water, workplace chemicals, and lead may contribute to environmental illnesses (EI) per Alberta Health Services [ Read More