When it first develops, emphysema, one of a group of lung diseases known as chronic obstructive pulmonary disease (COPD), is usually asymptomatic. As the illness progresses, however, it causes ...

You can remove mucus from the lungs using natural remedies, controlled coughing, and chest physical therapy. If these natural techniques don't help, you may need over-the-counter or prescription ...

2 Pulmonary and Critical Care Medicine, Department of Medicine, and Department of Cell Biology and Physiology, Washington University School of Medicine and Barnes-Jewish Hospital, St Louis, Missouri, ...