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Tobacco smoke is the main cause of lung cancer. Risk estimates for lung cancer indicate that tobacco smoke is responsible for 90% of lung cancers in the United States. Tobacco smoke contains more than 5,300 identified chemicals. The most significant carcinogens in tobacco smoke have been determined by a "Margin of Exposure" approach. [13]
Some substances cause cancer primarily through their physical, rather than chemical, effects on cells. [32] A prominent example of this is prolonged exposure to asbestos, naturally occurring mineral fibers which are a major cause of mesothelioma, which is a cancer of the serous membrane, usually the serous membrane surrounding the lungs. [32]
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.
Lung cancer, also known as lung carcinoma, is a malignant tumor that begins in the lung. Lung cancer is caused by genetic damage to the DNA of cells in the airways, often caused by cigarette smoking or inhaling damaging chemicals. Damaged airway cells gain the ability to multiply unchecked, causing the growth of a tumor.
KSHV/HHV-8 [19] causes all cases of Kaposi's sarcoma, and has been found in some cases of a cancer-related condition called Castleman's disease. [13] Studies involving other kinds of cancer, particularly prostate cancer, have been inconsistent. [13] Both of these herpesviruses are commonly found in cancerous cells of primary effusion lymphoma. [13]
Research from Sweden has found a link between getting a tattoo of any size and an overall 21% higher risk of developing lymphoma, a type of blood cancer. Tattoos may increase blood cancer risk by ...