Smoking is one of the most important risk factors for lung health. Long-term inhalation of tobacco smoke can lead to a number of respiratory diseases, including lung cancer, chronic obstructive pulmonary disease (COPD) and other conditions. In this article, we will discuss how smoking affects the lungs.
How does smoking affect the lungs?
Smoking leads to a number of negative changes in the lungs and respiratory system. Tobacco smoke contains more than 7,000 chemicals, many of which are toxic and at least 70 of which are known carcinogens.
When you inhale tobacco smoke, these chemicals enter the lungs, causing inflammation and irritation. Long-term smoking can lead to permanent damage to the lungs and respiratory system.
Changes in the lungs associated with smoking
Smoking leads to several key changes in the lungs:
Damage to the airways: Tobacco smoke causes irritation and inflammation of the airways, which can lead to narrowing of the airways and increase the risk of infection.
Alveolar destruction: Smoking can lead to the destruction of alveoli, called alveoli. This increases the risk of developing COPD, a condition that causes difficulty breathing.
Pulmonary fibrosis: Long-term smoking can lead to fibrosis, the formation of excessive connective tissue in the lungs, which eventually leads to a loss of lung elasticity.
Lung cancer: Smoking is the most important risk factor for lung cancer. The chemicals in tobacco smoke can damage lung cells, leading to mutations that can lead to cancer.
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