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Since 1971, more than 1000 agents have been evaluated, of which more than 500 have been identified as carcinogenic, probably carcinogenic, or possibly carcinogenic to humans. Read the IARC Monographs Q&A for answers to commonly asked questions on the evaluation process.
- What Is IARC?
- How Does IARC Classify Compounds with Respect to Their Cancer Risk?
- How Many Compounds Have Received A Classification from IARC?
- What Does A Classification of Group 2B Mean?
- Additional IFIC Resources on IARC
IARC, the International Agency for Research on Cancer headquartered in Lyon, France, operates under the auspices of the World Health Organization. IARC convenes groups of scientists from around the globe three times a year, and these Working Groups evaluate the weight of the evidence that an agent, chemical compound, complex mixtures (including ind...
IARC classifies compounds into four groups based on the available scientific evidence for increasing cancer risk in animals and humans. In 2019, IARC revised its classifications. The four classifications are Groups 1, 2A, 2B and 3. For definitions of these groups, please see the Preamble. For more information on IARC methods and classifications, pl...
Of the more than 900 substances classified by IARC to date, only one chemical compound has been classified as Group 4 (probably not carcinogenic to humans). Over 500 substances have been classified as Group 3 (not classifiable as to its carcinogenicity), and over 400 have received a classification of Group 2B or higher. For a complete list of IARC ...
IARC defines a Group 2B classification as “the agent is possibly carcinogenic to humans.” This category is used by IARC when there is only limited scientific evidence in human studies that a compound increases cancer risk in humans and when there is sufficient evidence of an increased cancer risk in experimental animals. IARC also uses information ...
Jun 16, 2023 · IARC Monographs. hazard classification. This infographic presents the categories used by the IARC Monographs on the Identification of Carcinogenic Hazards to Humans to classify a substance according to the level of certainty that the substance can cause cancer.
Dec 1, 2023 · Group 2A. Probably carcinogenic to humans. 95 agents. Group 2B. Possibly carcinogenic to humans. 323 agents. Group 3. Not classifiable as to its carcinogenicity to humans. 500 agents.
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Processed meat was classified as Group 1, “carcinogenic to humans”. What does this mean? This category is used when there is sufficient evidence of carcinogenicity in humans.
Sep 10, 2019 · Carcinogens in foods. Certain foods, when cooked at a high temperature, form natural chemicals that are classified as probable carcinogens, but studies suggest that these “likely” carcinogens are actually unlikely to cause the most common types of cancer.
Nov 14, 2012 · Overview. Volume 100 of the IARC Monographs, A Review of Human Carcinogens, covers all agents previously classified by IARC as "carcinogenic to humans (Group 1)" and was developed by six separate Working Groups: Pharmaceuticals; Biological agents; Arsenic, Metals, Fibres, and Dusts; Radiation; Personal Habits and Indoor Combustions; Chemical ...
