Can positive thinking, prayer or yoga help heal your body as well as your mind? It depends who you ask. Research into the connection between the mind and the body is both fascinating and controversial.

Identifying the signs of a stroke and getting the best treatment available is vital to a full recovery.

COPD, or chronic obstructive pulmonary (PULL-mun-ary) disease, is a progressive disease that makes it hard to breathe. "Progressive" means the disease gets worse over time. COPD can cause coughing that produces large amounts of mucus (a slimy substance), wheezing, shortness of breath, chest tightness, and other symptoms. Cigarette smoking is the leading cause of COPD. Most people who have COPD smoke or used to smoke. Long-term exposure to other lung irritants—such as air pollution, chemical fumes, or dust—also may contribute to COPD.