I was told that COPD is an inflammation of the lining of the lung which obviously reduces your capacity to breathe as well as you could. Even in a normal healthy person their lung capacity will start to reduce at around 35 years of age. I keep hearing talk of emphysema and bronchitis and I have neither, the only thing that has developed since being diagnosed is a bi-lateral pulmonary embolisms which are putting pressure on my right valve! It's hard to know exactly where you stand when no-one is giving you any explanation! It does depress me not being able to be as active as I was. I'm 53.