Human Carcinogens as of the 13th Report

Updated May 8, 2019 | Infoplease Staff

The National Institute of Environmental Health Service's Report on Carcinogens lists 243 substances known or suspected to cause cancer. Below is the report's list of "known carcinogens." The complete report, including the lengthy list of substances "reasonably anticipated to be human carcinogens," can be found on their website: NIEH.

Substances Known to Be Human Carcinogens

• Aflatoxins
• Alcoholic Beverage Consumption
• 4-Aminobiphenyl (4-Aminodiphenyl)
• Analgesic Mixtures Containing Phenacetin
• Aristolochic Acids
• Arsenic and certain Arsenic Compounds
• Asbestos
• Azathioprine
• Benzene
• Benzidine
• Beryllium and Beryllium Compounds
• Bis(chloromethyl) Ether and Technical-Grade Chloromethyl Methyl Ether
• 1,3-Butadiene
• 1,4-Butanediol Dimethanesulfonate
• Cadmium and Cadmium Compounds
• Chlorambucil
• 1-(2-Chloroethyl)-3-(4-methylcyclohexyl)-1-nitrosourea (MeCCNU)
• Chromium Hexavalent Compounds
• Coal Tar Pitches
• Coal Tars
• Coke Oven Emissions
• Cyclophosphamide
• Cyclosporin A
• Diethylstilbestrol
• Dyes that Metabolize to Benzidine
• Environmental Tobacco Smoke
• Erionite
• Estrogens, Steroidal
• Ethylene Oxide
• Formaldehyde
• Hepatitis B Virus
• Hepatitis C Virus
• Human Papillomas Viruses: Some Gential-Mucosal Types
• Melphalan
• Methoxsalen with Ultraviolet A Therapy (PUVA)
• Mineral Oils (Untreated and Mildly Treated)
• Mustard Gas
• 2-Naphthylamine
• Neutrons
• Nickel Compounds
• Radon
• Silica, Crystalline (Respirable Size)
• Smokeless Tobacco
• Solar Radiation
• Soots
• Strong Inorganic Acid Mists Containing Sulfuric Acid
• Tamoxifen
• 2,3,7,8-Tetrachlorodibenzo-p-Dioxin (TCDD)
• Thiotepa
• Thorium Dioxide
• Tobacco Smoking and Smokeless
• o-Toluidine
• Ultraviolet Radiation, Broad-Sprectrum
• Vinyl Chloride
• Ultraviolet Radiation, Broad Spectrum UV Radiation
• Wood Dust
• X-Radiation and Gamma Radiation