Possible carcinogen is a category of the dangers of chemical exposure as recognized by the United States Environmental Protection Agency (EPA).
This is as opposed to "probable" or "known" carcinogen under EPA classifications of carcinogenicity.
As of 2011 approximately 900 agents have been studied to determine if they are carcinogenic, with 267 being classified as possibly carcinogenic to humans as opposed to only 1 being classified as probably not carcinogenic to humans. Agents currently listed as possible carcinogens include: coffee, coconut oil, cobalt, and nickel.
In 2002 the EPA found that diesel is a "probable" carcinogen. .
- List of IARC Group 2A carcinogens, the "probably carcinogenic" category of the International_Agency_for_Research_on_Cancer.
- List of IARC Group 2B carcinogens, the "possibly carcinogenic" category of the IARC.
- Agents Classified by the IARC Monographs, Volumes 1–102 International Agency for Research on Cancer, World Health Organization: retrieved 19 August 2011
- List of classifications sorted by Group International Agency for Research on Cancer, World Health Organization: retrieved 19 August 2011