Carcinogens
CARCINOGENS According to the American Cancer Society (ACS, 1999), the probability of developing cancer in the United States is 1 in 2 for men and 1 in 3 for women. ... Carcinogens (OSHA Standard 29 CFR 1910.1003) are referred to by OSHA as, “Potential Occupational Carcinogens”. ... NIOSH lists recommended exposure levels (RELs) for some carcinogens. They recommend that all exposures should be avoided for carcinogens without RELs. ... o A4 – Not classifiable as a human carcinogen when there is concern that they could be carcinogens but there are no human or animal studies that confirm this. ... It is recommend that exposure to carcinogens must be kept to a minimum and that workers should be protected to the fullest extent against exposures to A1 carcinogens. The National Toxicology Program, a division of the Department of Health and Human Services headquartered at the National Institutes of Environmental Health, has been mandated by Congress to publish a biennial report on carcinogens. ... In this report, 228 substances are listed as “known” or “reasonably anticipated to be” carcinogens. These substances include 15 newly recognized carcinogens such as steroidal estrogens, oral contraceptives, wood dust and the antibiotic, chloramphenicol. In the field of indoor air quality there is increasing concern about carcinogens of biological origin.