how asbestos cause lung cancer?
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How Does Asbestos Cause Lung Cancer? When a person inhales asbestos, microscopic fibers can become lodged in their lung tissue. Over many years, the fibers can cause enough genetic and cellular damage to cause lung cells to turn cancerous.
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The major health problem caused by asbestos exposure, aside from cancer, is a lung disease called asbestosis. When a person breathes high levels of asbestos over time, some of the fibers lodge deep in the lungs. Irritation caused by the fibers can eventually lead to scarring (fibrosis) in the lungs.
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While smoking cigarettes (or pipes, cigars, marijuana and crack cocaine) is the number one cause of lung cancer, non-smokers can get lung cancer, too — currently, 15% of lung cancers are found in people who have never smoked.
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Asbestos diseases Asbestos fibres initially damage cell membranes in the lungs and, as a result, the lung tissue becomes hardened and scars. Symptoms of asbestosis include shortness of breath after exercise, persistent coughing, chest pain, phlegm, lung infections, pulmonary hypertension and heart failure.
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Inhaled asbestos fibers cause lung scarring and stiffness, which prevents the patient from taking full, deep breaths. Asbestosis is very similar to pulmonary fibrosis and is often misdiagnosed as such. The primary difference is pulmonary fibrosis isn't caused by asbestos exposure.
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Pleural disease, a hallmark of asbestos exposure, includes formation of pleural plaques, calcification, thickening, rounded atelectasis, adhesions, effusion, and mesothelioma. Diagnosis is based on history and chest x-ray or CT findings. Treatment is supportive.
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Lung diseases caused by smoking include COPD, which includes emphysema and chronic bronchitis. Cigarette smoking causes most cases of lung cancer. If you have asthma, tobacco smoke can trigger an attack or make an attack worse. Smokers are 12 to 13 times more likely to die from COPD than nonsmokers.
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Radon produces a radioactive dust in the air we breathe. The dust is trapped in our airways and emits radiation that damages the inside of our lungs. This damage, like the damage caused by smoking, increases our risk of lung cancer.
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Asbestos is directly related to a number of life-threatening diseases including, asbestosis, pleural mesothelioma (lung) and peritoneal mesothelioma (abdomen). Fibre cement sheet is still readily available, but the reinforcing fibres are now cellulose rather than asbestos.
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['Smoking. Your risk of lung cancer increases with the number of cigarettes you smoke each day and the number of years you have smoked. ... ', 'Exposure to secondhand smoke. ... ', 'Previous radiation therapy. ... ', 'Exposure to radon gas. ... ', 'Exposure to asbestos and other carcinogens. ... ', 'Family history of lung cancer.']
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Smoking and Respiratory Disease Smoking can cause lung disease by damaging your airways and the small air sacs (alveoli) found in your lungs. Lung diseases caused by smoking include COPD, which includes emphysema and chronic bronchitis. Cigarette smoking causes most cases of lung cancer.
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Asbestos-Related Diseases. Asbestos diseases include malignant conditions such as mesothelioma and lung cancer, and possibly ovarian and laryngeal cancers. Nonmalignant asbestos diseases include asbestosis, COPD, pleural plaques, pleural thickening, pleural effusion and atelectasis.
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Unfortunately, effects on fertility and the developing fetus are under-studied. The possibility of other asbestos-induced health effects does exist. These include brain-related tumors, blood disorders due to the mutagenic and hemolytic properties of asbestos, and peritoneal fibrosis.
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Pleural plaques are the most common pleural changes caused by asbestos. Usually, there is a 20 – 30 years latency period before pleural plaques appear. Although they do not undergo malignant transformation, patients with plaques are at risk for developing pulmonary fibrosis, lung cancer, and malignant mesothelioma.
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Incidence of lung cancer among patients with interstitial lung disease was high. Interstitial lung diseases have a high potential for developing into lung cancer, even when concurrent with chronic obstructive pulmonary disease.
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Smoking causes about 90% (or 9 out of 10) of all lung cancer deaths. More women die from lung cancer each year than from breast cancer. Smoking causes about 80% (or 8 out of 10) of all deaths from chronic obstructive pulmonary disease (COPD). Cigarette smoking increases risk for death from all causes in men and women.
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Lung cancer starts when abnormal cells grow out of control in the lung. They can invade nearby tissues and form tumours. Lung cancer can start anywhere in the lungs and affect any part of the respiratory system. The cancer cells can spread, or metastasize, to the lymph nodes and other parts of the body.