After all, when evaluating the carcinogenic risk, researchers need to assess the exposure level of the substance in the population in addition to the carcinogenic intensity, and prioritize the research so as to provide reference advice for protecting the health of the population more efficiently. In this year’s updated list, the number of Class I carcinogens is 113, Class IIA carcinogens is 66, Class IIB carcinogens is 285, Class III carcinogens is 505, and Class IV carcinogens is 1. There are too many types of carcinogens to list, so let’s pick the I carcinogens first, and let’s talk about some of them that are more relevant to our daily life, and I will especially mark the ones that may be involved in food: 1. Cereals should not eat, we do positive control to do this) 4, alcoholic beverages 5, aluminum products in the production process of occupational exposure 6, 4 – phenyl aniline (I do not know if this translation is right chemical naming some forget) 7, betel nut 8, aristolochic acid (nothing do not blindly eat herbs, although Guanmutong is no longer in the new version of the pharmacopoeia, but at least wide Fangji, Qingmu Xiang, Tianxian vine, Aristolochia, bone wind (The Chinese Pharmacopoeia and national drug standards contain hundreds of varieties of proprietary Chinese medicines containing aristolochic acid, so please use Chinese medicine and herbal preparations under the guidance of a professionally qualified physician or pharmacist, including medicinal meals) 9, arsenic and inorganic arsenic compounds (andrographic wine or something on their own, don’t drink two or two every day or so) 10, asbestos 11 11, asbestos, gold amine (dye components, I am not very clear) 12, imidazole thiopurine (an immunosuppressive drugs, ordinary people are generally not exposed to) 13, benzene (organic solvents, it is said that some poor quality furniture and decoration materials and other things to save costs will be used) 14, benzidine (organic dyes, now basically banned, but some dyes by metabolism may still produce benzidine) 15, benzene propylene [ α]pyrene (many baked and smoked foods may contain, it belongs to the polycyclic aromatic hydrocarbons organic substances, mostly due to incomplete combustion of organic matter, pyrolysis and produced. Its carcinogenicity is still quite strong, especially note that cigarette smoke in the high content of this substance) 16, beryllium and its compounds 17, betel nut chewing blocks used together with tobacco or chewing blocks used alone (a special Southeast Asian region to eat, the specific is not very well understood sorry – -b) 18, dichlormethyl ether / chloromethyl ether (these two goods in general or occupational exposure risk is relatively high. Mainly or laboratory and industrial production in the synthesis of polymers involved in the process, such as the synthesis of some plastics, ion exchange resins and so on, the general exposure of ordinary people in very low doses) 19, white elimination of an (a treatment of chronic granulocytic leukemia drugs, the general public is estimated to be not exposed. Many drugs for the treatment of cancer itself is actually carcinogenic or cancer-promoting effect, this is not table) 20, 1, 3 – butadiene (synthetic rubber and some other polymer production process involved, mainly occupational exposure, the electronics industry in particular, we must pay attention to, here I can not help but want to spit, the bottom of the electronics industry workers are actually really hard) 21, cadmium and cadmium compounds (this depends on the place, some places) (This depends on the place, some places crop land will be contaminated by cadmium-containing sewage, where the cadmium content of many agricultural products will be relatively high, such as the “cadmium rice” event that will be seen from time to time) 22, tumor canine (also anti-cancer drugs, the treatment of certain chronic lymphocytic leukemia, MDS and some ovarian cancer may be used) 23, naphthalene mustard (as above, the treatment of Hodgkin’s lymphoma may be used) (Lymphoma may be used) 24, hexavalent chromium compounds (generally also a problem of contamination) 25, the testicular worm (is the famous liver fluke, uncooked snails, fish may contain. (So cooked fish is definitely a good habit to eat) 26, coal tar distillation, coal pitch occupational exposure (mainly because the polycyclic aromatic hydrocarbons in it is too toxic) 27, coke production occupational exposure? 28, cyclophosphamide (immunosuppressive drugs, the general public will not have the opportunity to contact) 29, cyclosporine (as above) 30, 1, 2 – dichloropropane 31, hexestrol 32, diesel exhaust 33, EB virus (and nasopharyngeal carcinogenesis have a certain relationship) 34, gross zeolite (occupational exposure to greater risk, the specific is not very well understood) 35, ethylene oxide (this may work in hospitals) 36. etoposide or etoposide + cisplatin / bleomycin (also anti-tumor drugs) 37. fission products, including strontium-90 38. formaldehyde (just after the renovation of the house is easy to have) 39. hematite excavation occupational exposure 40. H. pylori infection (this goods often cause peptic ulcers, so such problems should be treated as soon as possible. 41, hepatitis B virus 42, hepatitis C virus 43, HIV type I 44, human papilloma virus (16, 18, 31, 33, 35, 39, 45, 51, 52, 56, 58, 59) 45, human T-lymphocytic leukemia virus type I 46, all types of ionizing radiation 47, steel casting occupational exposure 48, the use of strong acid 49, Kaposi’s sarcoma-associated herpes virus 50, Leather dust 51, Red aniline dye (magenta) manufacturing occupational exposure 52, Mefalexam (anti-cancer drug) 53, Methicillin + long-wave UV irradiation (a treatment for vitiligo, use as prescribed) 54, 4,4′-methylenebis(2- o-chloroaniline) 55, Untreated or roughly processed mineral oil 56. MOPP regimen and other chemotherapy combination regimens using alkylating agents 57. 2-Naphthylamine (industrial dye) 58. neutron radiation 59. nickel compounds 60. N’-nitrosononegatine and 4-nitrosonegatine -1-(3-pyridyl)-1-butanone (contained in cigarette smoke) 61. liver fluke from Thailand (similar to Schistosoma mansoni) 62. outdoor air pollution 63. Painter occupational exposure 64, PCB-126 (a PCB compound) 65, finasteride (an antipyretic, has been banned in many countries) 66, phosphorus -32, iodine -131 and other isotopes (isotopes, the laboratory to do radioisotopes to protect themselves Oh) 67, plutonium and other radioactive elements 68, rubber manufacturing occupational exposure 69, Chinese salted fish 70, Egyptian schistosomes 71, Simustine (an anti-tumor drug) 72, shale oil 73, silica dust (occupational exposure, this stuff not only causes silicosis, but also cancer) 74, solar radiation 75, soot 76, sulfur mustard (chemical weapons, some people want to use it to develop anti-cancer drugs but because of the strong toxicity did not succeed) 77, 2,3,7,8 – tetrachlorodibenzo-p-dioxin (people generally fear it as the ghost of dioxin? In fact, dioxins are a large class of things, toxicity varies, but 2,3,7,8- tetrachlorodibenzo-p-dioxin research is more thorough, mutagenic effect is very obvious, the mechanism is also relatively clear, mutagenic experiments often take it as a positive control) 78, 2,3,4,7,8- pentachlorodibenzofuran 79, it moxifen (an anti-estrogen) 80. 81. tobacco smoke 82. o-toluidine (industrial dye, occupational exposure) 83. sulforaphane (alkylating agent, used for cancer treatment) 84. trichloroethylene (occupational exposure) 85. ultraviolet radiation 86. vinyl chloride monomer (occupational exposure) 87. wood dust (occupational exposure) 88. x-rays and gamma rays