People who continue to smoke may severely damage their lungs. The main identified cause of chronic bronchitis is smoking. Your bronchial tube or airway is lined with glands that produce mucus.

It also prevents complications like pneumonia. However, eliminating mucus is essential to managing lung conditions, such as chronic bronchitis, bronchiectasis, and chronic obstructive pulmonary ...

At least half of smokers will develop chronic bronchitis (CB), cough and sputum without lung-function impairment, and up to 15% will develop chronic obstructive pulmonary disease (COPD ...

This is why, just like the flu and common cold, acute bronchitis is more common in wintertime. Acute bronchitis is inflammation of the bronchial tubes, which carry air to and from the lungs.

Here's what causes bronchitis, how the illness usually spreads and how you can treat symptoms if it affects you or a loved ...

Chronic bronchitis What is it ... CF creates dangerously thick and sticky mucus that blocks airways, damages your lungs, and increases your risk of infection. CF can also prevent proteins your ...

Mucus in your chest can be a symptom of several chronic lung diseases ... StatPearls Publishing; 2025. Acute bronchitis: Learn more – Treating acute bronchitis. Institute for Quality and ...

Bronchitis is a respiratory illness that occurs when the airways leading into your lungs get irritated, Nagata explains, which leads to the swelling and mucus buildup that causes difficulty breathing.