1. Genetic Factors for Smoking Boost Chronic Bronchitis Risk
Swedish study says it's first to quantify heritability of the disease

2. Chronic obstructive pulmonary disease : Causes, incidence, and risk factors  (Trust Mark: Doctor-Reviewed)
Smoking is the leading cause of COPD. The more a person smokes, the more likely that person will develop severe bronchitis. Secondhand smoke may also cause chronic bronchitis. Air pollution, infection, and allergies make chronic bronchitis worse. ...• Reviewer: Benjamin Medoff, MD, Assistant Professor of Medicine, Harvard Medical School, Pulmonary and Critical Care Unit, Massachusetts General Hospital. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

3. Bronchitis  (Trust Mark: Doctor-Reviewed)
Bronchitis is an inflammation of the air passages between the nose and the lungs, including the windpipe or trachea and the larger air tubes of the lung that bring air in from the trachea (bronchi). Bronchitis can either be of brief duration (acut...• Author: Tish Davidson