What is the Report on carcinogens?
The Office of the RoC’s scientific staff, with assistance from the RoC support contract staff, prepares the Report on Carcinogens, a congressionally mandated report that identifies substances or exposure circumstances that may pose a hazard to human health by virtue of their carcinogenicity.
Who funds the NTP?
The National Toxicology Program (NTP) is an inter-agency program run by the United States Department of Health and Human Services to coordinate, evaluate, and report on toxicology within public agencies. The National Toxicology Program is headquartered at the National Institute of Environmental Health Sciences (NIEHS).
How many known carcinogens are there?
Since 1971, the agency has evaluated more than 1,000 agents, including chemicals, complex mixtures, occupational exposures, physical agents, biological agents, and lifestyle factors. Of these, more than 500 have been identified as carcinogenic, probably carcinogenic, or possibly carcinogenic to humans.
What is a class 2 carcinogen?
Group 2 (A and B): “This category includes agents, mixtures and exposure circumstances for which, at one extreme, the degree of evidence of carcinogenicity in humans is almost sufficient, as well as those for which, at the other extreme, there are no human data but for which there is evidence of carcinogenicity in …
What are the levels of carcinogens?
International Agency for Research on Cancer (IARC)
- 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 in humans.
Do carcinogens leave the body?
Some chemical carcinogens are persistent in the environment because they do not degrade rapidly. In the human body, they are not easily metabolized or excreted. Consequently they accumulate and may have half-lives of a decade or more.