Ecological health is a term that has been used in relation to both human health and the condition of the environment. * In medicine, ecological health has been used to refer to multiple chemical sensitivity, which results from exposure to synthetic chemicals (pesticides, smoke, etc.) in the environment, hence the term ecological. * The term has also been used in medicine with respect to management of environmental factors (taxes, health insurance surcharges) that may reduce the risk of unhealthy behavior such as smoking. * As an urban planning term, ecological health refers to the "greenness" of cities, meaning composting, recycling, and energy efficiency. * With respect to broader environmental issues, ecological health has been defined as "the goal for the condition at a site that is