The International Agency for Research on Cancer (IARC) classifies substances based on their carcinogenicity to humans. According to IARC, exposure to some substances or occupations may increase the risk of colorectal cancer.
There is limited evidence that the following occupational exposures may increase the risk of colorectal cancer:
Who is exposed?
CAREX Canada estimates the number of Canadians exposed to carcinogens in the workplace. See the CAREX Canada carcinogen profiles for more information on exposures associated with colorectal cancer and the related industries and occupations:
What is the evidence?
See the IARC monographs for more information on the scientific evidence linking asbestos with increased risk of colorectal cancer:
For more information on how IARC classifies carcinogens, read this fact sheet.