Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Chronic obstructive pulmonary disease (COPD) is a general term encompassing a range of lung diseases such as chronic bronchitis, asthma and emphysema, causing a chronic obstruction of the flow of air through the airways and the lungs, severely affecting the respiratory system. Mainly caused by smoking, COPD conditions can be alleviated by acupuncture procedures that can improve respiratory muscles activity and support better respiration, according to a new research. Learn more about COPD and its treatment in this book.