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How is tobacco use associated with cancer?
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- tobacco cancer
Tobacco is a plant with leaves that have high levels of the addictive chemical nicotine. The leaves may be smoked (in cigarettes, cigars, and pipes), applied to the gums (as dipping and chewing tobacco), or inhaled (as snuff). Tobacco leaves also contain many cancer-causing chemicals, and tobacco use and exposure to secondhand tobacco smoke have been linked to many types of cancer and other diseases. The scientific name is Nicotiana tabacum. Cancer is a term for diseases in which abnormal cells divide without control and can invade nearby tissues. Cancer cells can also spread to other parts of the body through the blood and lymph systems. There are several main types of cancer. Carcinoma is a cancer that begins in the skin or in tissues that line or cover internal organs. Sarcoma is a cancer that begins in bone, cartilage, fat, muscle, blood vessels, or other connective or supportive tissue. Leukemia is a cancer that starts in blood-forming tissue such as the bone marrow, and causes large numbers of abnormal blood cells to be produced and enter the blood. Lymphoma and multiple myeloma are cancers that begin in the cells of the immune system. Central nervous system cancers are cancers that begin in the tissues of the brain and spinal cord. Also called malignancy.
Preview- It appears that, tobacco use has long been linked to head and neck cancers, particularly in tissues through which inhaled tobacco smoke must pass. For oral cancers, men who smoke have a 27-times higher rate of oral cancer than men who do not smoke. Oral, by or having to do with the mouth.
- It really is clear that, as noted at the outset, the paper describing the association between tobacco use and lung cancer stands as a classic in public health. On average, smokers increase their risk of lung cancer between 5 and 10-fold and in developed countries, smoking is responsible for upwards of 80% of all lung cancers. Lung cancer, cancer that forms in tissues of the lung, usually in the cells lining air passages. The two main types are small cell lung cancer and non-small cell lung cancer. These types are diagnosed based on how the cells look under a microscope. ALL is an aggressive (fast-growing) type of leukemia (blood cancer) in which too many lymphoblasts (immature white blood cells) are found in the blood and bone marrow. Also called acute lymphoblastic leukemia and acute lymphocytic leukemia. Lung, one of a pair of organs in the chest that supplies the body with oxygen, and removes carbon dioxide from the body.
- It`s apparent that, in the Western world, tobacco use is the single most important cause of bladder cancer, accounting for an estimated 40-70% of all cases. Smokers` risks of bladder cancer are 2-3 times higher compared to nonsmokers. Bladder cancer, cancer that forms in tissues of the bladder (the organ that stores urine). Most bladder cancers are transitional cell carcinomas (cancer that begins in cells that normally make up the inner lining of the bladder). Other types include squamous cell carcinoma (cancer that begins in thin, flat cells) and adenocarcinoma (cancer that begins in cells that make and release mucus and other fluids). The cells that form squamous cell carcinoma and adenocarcinoma develop in the inner lining of the bladder as a result of chronic irritation and inflammation. Bladder is the organ that stores urine.
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