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The International Agency for Research on Cancer (IARC) and evaluation of carcinogenic hazards

Description of what The International Agency for Research on Cancer (IARC) is, and how carcinogens are defined and classified.
Frontpage of IARC Monographs Programme Volume 130
© International Agency for Research on Cancer (IARC)
The International Agency for Research on Cancer (IARC) is a specialized cancer agency of the World Health Organization (WHO).

IARC continuously evaluates the carcinogenicity of chemicals, occupations, physical agents, biological agents, and other agents that are suspected to be carcinogenic to humans. International working groups critically review published studies of cancer in humans and experimental animals, and mechanistic studies, and classify each agent into the following groups:

  • Group 1: Carcinogenic to humans
  • Group 2A: Probably carcinogenic to humans
  • Group 2B: Possibly carcinogenic to humans
  • Group 3: Not classifiable as to its carcinogenicity to humans

The goal of IARC’s classification process is to assess carcinogenic hazards from occupational, environmental, and lifestyle exposures and agents, thus providing an essential step in the societal decision-making process to identify and then control carcinogenic hazards. The classifications are widely used and referenced by governments, organizations, health personnel and the public around the world.

Here you can read more about the classifications and download the monographs.

© University of Bergen/Author: G. Tjalvin.
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