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A carcinogen (/ k ɑːr ˈ s ɪ n ə dʒ ən /) is any agent that promotes the development of cancer. [1] Carcinogens can include synthetic chemicals , naturally occurring substances, physical agents such as ionizing and non-ionizing radiation , and biologic agents such as viruses and bacteria . [ 2 ]
Non-fibrous particulate materials that cause cancer include powdered metallic cobalt and nickel, and crystalline silica (quartz, cristobalite, and tridymite). [32] Usually, physical carcinogens must get inside the body (such as through inhaling tiny pieces) and require years of exposure to develop cancer. [32] Common occupational carcinogens ...
The central role of DNA damage and epigenetic defects in DNA repair genes in carcinogenesis. DNA damage is considered to be the primary cause of cancer. [17] More than 60,000 new naturally-occurring instances of DNA damage arise, on average, per human cell, per day, due to endogenous cellular processes (see article DNA damage (naturally occurring)).
The causes of cancer-related dyspnea can include tumors in or around the ... is a carcinogen that can cause primary tumors to develop. [46] Diet and exercise ...
Nearly half of cancer cases in adults are caused by preventable risk factors, including alcohol. ... Still, the World Health Organization classifies alcohol as a Group 1 carcinogen, ...
The chemical, which is the active ingredient in the weed killer Roundup, can allegedly cause cancer. The oat products tested were made by General Mills, including several Cheerios varieties and ...
Bacteria involved in causing and treating cancers. Cancer bacteria are bacteria infectious organisms that are known or suspected to cause cancer. [1] While cancer-associated bacteria have long been considered to be opportunistic (i.e., infecting healthy tissues after cancer has already established itself), there is some evidence that bacteria may be directly carcinogenic.
This rating is just one of the IARC’s several classifications of cancer risk, which range from “definite” carcinogens, like smoking tobacco, to “possible,” where radio waves reside ...