After Steve got breathless on short walks he was diagnosed with deadly COPD. Now he's healthy again and can even run marathons... and doctors say nearly every sufferer can do the same

Steve was diagnosed with COPD after experiencing breathlessness on short walks, but he has since regained his health and is even able to run marathons. Doctors claim that nearly every sufferer of COPD can achieve similar results. This suggests a positive outlook for individuals with the condition.