Go deep inside the lungs to see how chronic obstructive pulmonary disease (COPD) causes chronic bronchitis and emphysema. COPD can be brought on by smoking, long-term exposure to dust and fumes, and in some cases, can be a genetic disorder.

Click here to learn more about your lungs.

Sponsored by Pfizer and Boehringer Ingelheim Pharmaceuticals, Inc. Animation produced by Visible Productions Inc.

Want to know how to look marvelous without splurging so much? Dr. Oz invites three beauty experts to share the smartest ways to save money while looking fabulous starting from your hair and makeup tools to the beauty products you use.