How does smoking affect the respiratory system?

• A. Improves lung elasticity
• B. Damages lung tissue and increases mucus production
• C. Enhances airflow
• D. Reduces risk of respiratory infections

Answer: (B)

Smoking significantly damages lung tissue and increases mucus production, which profoundly impacts the health of the respiratory system. The harmful chemicals found in tobacco smoke can cause inflammation and damage the airways and lung tissue, leading to chronic conditions such as chronic obstructive pulmonary disease (COPD) and emphysema.

Additionally, smoking stimulates the goblet cells in the airways to produce more mucus. This increased mucus can obstruct airflow and contribute to coughing and wheezing, making it harder to breathe. Over time, the damage and excess mucus production can lead to chronic bronchitis, where ongoing inflammation causes the airways to become swollen and narrowed, further reducing lung function.

In contrast, other options suggest beneficial effects from smoking, which contradicts extensive scientific research highlighting the detrimental impact of smoking on respiratory health.