After a couple of recent posts from people about this, I've been thinking. If at diagnosis, someone is still smoking or has recently stopped, does little or no exercise and is overweight and then changes all that and takes their meds then an improvement in their fev is likely. However, if, like me at diagnosis they have been stopped smoking for years, exercise and are the correct weight then there is nothing more they can do to help themselves so the only way is downhill. Very depressing but it does make sense, to me at least.
What do others think?