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Cigarette Smoking Can Cause Death Due to Lung CancerBY: Ritu Choudhary | Category: Lung Cancer | Submitted: 2010-08-08 17:54:03
What is lung cancer The lungs are two organs symmetrical, spongy, placed in the chest. Their function is to transfer oxygen to the bloodstream and breathed scrubbed the carbon dioxide produced by the body. Lung cancer affects this function because it causes uncontrolled growth of certain lung cells (those that constitute the bronchi, bronchioles and alveoli) which may constitute a mass obstructing the smooth flow of air or cause pulmonary or bronchial hemorrhage. There is only one type of lung cancer but other types of disease depending on the affected lung tissue. How widespread is lung cancer? Lung cancer is the leading cause of death in industrialized countries. This disease alone accounts for 20 percent of all cancers in males. In recent years, however, is registering a steady increase among women. The reason is simple: more and more women are smoking and smoking is the leading cause of lung cancer. It is estimated that over 250,000 new cases of cancer each year in people up to 84 years of age is detected. While taking account of the increase due to aging of the population, on average every three men and one woman in every four count is likely to be diagnosed with cancer during the lifetime (0-74 years). In Europe deaths due to lung cancer is about 35,000 people a year (about 27,000 men and 6,000 women), representing the leading cause of cancer death in men and second in women. Who is at risk of lung cancer? Cigarette smoking is now considered the most important causal factor for lung cancer. It was shown that a man of 35, who smokes 25 or more cigarettes a day have a risk of dying of lung cancer before 75 years of 13 percent. The risk increases in relation to: 1. number of cigarettes smoked (In direct proportion: the more, the risk more salt); 2. age of onset of smoking (more than one is young, the more is the risk); 3. no filter in cigarettes (Combustion products such as tars, are important contributors to disease). In subjects who quit smoking the risk decreases over the next 10-15 years, to match that of someone who has never smoked, if you can stop in time. Even passive smoking increases the risk of developing lung cancer (ie increases of 19 percent non-smoking individual risk of getting lung cancer). The most important risk factor in lung cancer is the cigarette smoke: for there is a clear dose-effect relationship, and this also applies to passive smoking among this habit and disease. This means that more has smoked (or more smoke you breathe in life), the greater the likelihood of getting sick. This report is particularly true for some subtypes of lung cancer: squamous cell carcinoma and small cell. Cigarette smoke contains many substances that act directly (ie with immediate injury) or indirectly (ie slow changes over time) at the level of the bronchi. For example, are direct carcinogenic polycyclic aromatic hydrocarbons (ie the products of combustion, including well known benzopyrene) and nitrosamines (derivatives of ammonia used in the manufacture of cigarettes), while phenols and aldehydes (content example in the paper) have proved to indirect factors, that can, over time, to promote cell transformation in the way tumor. There are other chemical carcinogens such as asbestos (asbestos), radon, heavy metals, tar and mineral oils, which cause lung cancer especially in that part of the population that comes into contact with these substances for business : we speak in this case occupational exposure. Finally do not forget some genetic alterations that predispose to this disease, the most important are those that occur in the gene p53 or FHIT gene, which still account for a very small number of cases. Article Source: http://www.cancer-surgery.com/ About Author / Additional Info: I am not a cancer doctor. Always consult your doctor before taking any action or conclusion regarding your medical condition. Comments on this article: (0 comments so far)
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