The damaging changes in your lungs and airways can be

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The damaging changes in your lungs and airways can be short or long term. Changes that appear suddenly, last a short time then go away, they are called acute changes. For example colds and pneumonia. Chronic changes are those that happen slowly and last a long time - some for the rest of your life. A chronic change caused by smoking is emphysema. Bronchitis and lung cancer are other chronic changes. 5 . Lung Cancer and Emphysema Lung cancer is the most common cause of death. Cancer is caused by out-of- control cell growth. Lung cancer happens when this uncontrolled cell growth starts in the lungs Lung cancer is strongly correlated with cigarette smoking, with about 90% of lung cancers based as a result of tobacco use. The risk of lung cancer increases with the amount of cigarettes smoked. Lung cancer ,or any cancer, can be also a result of genes, this can be inherited from family members. Emphysema is a progressive disease. The lung is damaged by harmful substances (like tobacco) and the alveoli is destroyed. The lung tissue looses elasticity and the air can’t go out completely, so that the lungs blow up and the bronchi are destroyed. The involved people don’t get enough breath and in the long term run they die.
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