Why might someone with COPD need oxygen therapy?

Learn more about oxygen therapy at www.YouAndOxygenTherapy.com
Jerry Krishnan, MD, PhD, an expert on lung disease from the University of Illinois at Chicago, explains how having chronic obstructive pulmonary disease (COPD) can make it hard to get enough oxygen into the bloodstream and why oxygen therapy can help. He talks about activities that might require oxygen therapy, oxygen during sleep, and the importance of early COPD diagnosis. Dr. Krishnan also explains why improving the air you breathe can help slow COPD and help you be as healthy as possible.