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  2. Causes of cancer - Wikipedia

    en.wikipedia.org/wiki/Causes_of_cancer

    HPV is the most common virus that infects the reproductive tract. Infection can lead to the development of cervical cancer in women. Viral infection is a major risk factor for cervical and liver cancer. [61] A virus that can cause cancer is called an oncovirus.

  3. Epidemiology of cancer - Wikipedia

    en.wikipedia.org/wiki/Epidemiology_of_cancer

    The epidemiology of cancer is the study of the factors affecting cancer, as a way to infer possible trends and causes. The study of cancer epidemiology uses epidemiological methods to find the cause of cancer and to identify and develop improved treatments. This area of study must contend with problems of lead time bias and length time bias ...

  4. Carcinogenesis - Wikipedia

    en.wikipedia.org/wiki/Carcinogenesis

    Since 1% to 3% of infected individuals are likely to develop gastric cancer, [109] H. pylori-induced gastric cancer is the third highest cause of worldwide cancer mortality as of 2018. [110] Infection by H. pylori causes no symptoms in about 80% of those infected. [111] About 75% of individuals infected with H. pylori develop gastritis. [112]

  5. Carcinogen - Wikipedia

    en.wikipedia.org/wiki/Carcinogen

    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]

  6. Cancer - Wikipedia

    en.wikipedia.org/wiki/Cancer

    Tobacco smoke, for example, causes 90% of lung cancer. [48] Tobacco use can cause cancer throughout the body including in the mouth and throat, larynx, esophagus, stomach, bladder, kidney, cervix, colon/rectum, liver and pancreas. [49] [50] Tobacco smoke contains over fifty known carcinogens, including nitrosamines and polycyclic aromatic ...

  7. Carcinogenic bacteria - Wikipedia

    en.wikipedia.org/wiki/Carcinogenic_bacteria

    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.

  8. Safe handling of carcinogens - Wikipedia

    en.wikipedia.org/wiki/Safe_handling_of_carcinogens

    Carcinogens are defined as 'a substance or agent that can cause cells to become cancerous by altering their genetic structure so that they multiply continuously and become malignant'. [1] The World Health Organization breaks down the three types of carcinogens that can cause cancer in humans. The first type of carcinogen is the physical type ...

  9. List of cancer clusters - Wikipedia

    en.wikipedia.org/wiki/List_of_cancer_clusters

    Testicular cancer: Fulton County, New York: 3 Dimethylformamide (DMF) 2-Ethoxyethanol 2-Ethoxyethyl acetate 2-Butoxyethanol [14] 1987–1999 Brain cancer, Leukemia, Lymphoma: Wilmington, Massachusetts: 20 Unknown N-Nitrosodimethylamine (NDMA) [15] [16] [17] 1993–2008 Childhood brain cancer, brain tumors, colon cancer, anal cancer, rectal ...