title: Risk caused by low levels of pollution.
abstract: The concept has arisen that pollutants in almost any concentration cause a small risk of death. This arises from a consideration of cancer and contrasts with earlier work where a threshold is assumed.The theoretical and experimental evidence for this concept is reviewed, and some important consequences are drawn for societal decision making.
mesh_terms: D000397:Air Pollution; D002274:Carcinogens, Environmental; D004305:Dose-Response Relationship, Drug; D004307:Dose-Response Relationship, Radiation; D004781:Environmental Exposure; D004785:Environmental Pollutants / Q000506:poisoning / Q000633:toxicity*; D006801:Humans; D009369:Neoplasms / Q000139:chemically induced; D009784:Occupational Diseases / Q000139:chemically induced*; D011848:Radioactive Pollutants; D012306:Risk
chemical_list: D002274:Carcinogens, Environmental; D004785:Environmental Pollutants; D011848:Radioactive Pollutants