Chronic Obstructive Pulmonary Disease, also known as COPD, is the 4th leading cause of death in Kentucky and in the United States. Almost 1 in 10 Kentucky adults have been diagnosed with COPD by a doctor and it is estimated that even more people are living with the disease and don't even know it. Although this disease can be deadly, simple changes in lifestyle can reduce your risk of developing the disease or improve your health if already diagnosed.