Whether calculating your target heart rate, assessing your risk for a common condition, or testing your knowledge of today's health concerns, these tools help you manage your health. They are easy to use, informative, and often surprising.
Emphysema is a long-term lung disease that usually gets worse over time. It's a form of COPD (chronic obstructive pulmonary disease). According to the American Lung Association, close to 5 million Americans have emphysema. Take this quiz to see what you know about this disease.