Smoking can cause lung disease by damaging your airways and the small air sacs (alveoli) found in your lungs. 1,2 Lung diseases caused by smoking include COPD, which includes emphysema and chronic bronchitis. 1,2 Cigarette smoking causes most cases of lung cancer. 1,2How does smoking cigarettes affect your lungs?
Smoking inflames and irritates the lungs. Even one or two cigarettes cause irritation and coughing. Smoking also can destroy your lungs and lung tissue. This decreases the number of air spaces and blood vessels in the lungs, resulting in less oxygen to critical parts of your body.How does tobacco affect the respiratory system?
Inhaling tobacco smoke causes damage to many of the body’s organs and systems. The effects of tobacco smoke on the respiratory system include: permanent damage to the air sacs of the lungs. The effects of tobacco smoke on the circulatory system include: increased risk of stroke and heart attack due to blockages of the blood supply.