One respiratory benefit of quitting tobacco use is improved lung function. Smoking can cause damage to the lungs, leading to inflammation and irritation of the airways, decreased lung capacity, and difficulty breathing. When someone quits smoking, their lungs start to repair themselves, leading to improved lung function, increased lung capacity, and easier breathing. This can also reduce the risk of developing respiratory conditions such as chronic obstructive pulmonary disease (COPD) and lung cancer.
