Does Excessive Stress And Anxiety Lead To Lung Disease?

Question: I have not spoken to you in a while, I have been working on stress/anxiety/panic reduction. I have had considerable success, though not where I want to be.
I have been visiting with a psychiatrist who like you believes that my issues are all anxiety driven.
I know you are trained in medicine and specialize in Pulmonology, so your answers to that topic would outweigh the psychiatrists who specializes in the mental and conscious behaviors.
He recently asked me a question in regards to my issue. he asked "why is it hard to accept that this is psychosomatic, why would things be easier if this was a physical illness despite all the evidence showing us it is not" I have not answered this but after thinking of this, i believe that after once being diagnosed that there was nothing wrong with my heart, I end up in hospital a few weeks later with a angiogram showing collateral circulation. I guess I am hesitant.

Since I am working toward acceptance, I need to know a few things.
I have been informed by a Internal Dr. that "generally" people with COPD can not sleep laying down. Well I do that well.
I have good PFT with Midflows up and down.
I have no symptoms of Bronchitis, nor any restrictive disease.

Since I generally have a breathing issue on exertion such as after climbing steps (not while climbing but after)
Or when I carry a 40 lb bag of groceries in to the house, I feel a bit of pressure on chest as I try to take a breath but am limited to how much my chest will expand.
I am not obese at all but if i can get a few inches off my upper abdomen and stomach, i may breath easier, If i pull my stomach in as if i were doing yoga, I find i can get a greater or larger breath of air.
So Your expertise is Pulmonology but can you explain what long term anxiety and panic can do to breathing and i know panic can slow digestion causing my stomach to push upward. Can the stress tighten the upper chest muscles causing a reduced expansion to upper lungs.

Oh, please tell me if upper lungs can be damaged and lower still work.

Thanks for your response, it is very helpful and gives credence to the statements of my psychiatrist and his responses.

The following is what I mentioned to him from an incident that i used to progress and work to eliminate the anxiety

I was thinking that I needed a bit of scolding or firm handedness to shake some sense into me and realize that there is other factors at work here and look at them and stop them (worrying). The thought/question was once again upon climbing the stairs at work and being out of breath and unable to talk for a few moments. What I wondered was, If I am out of Breath, what caused it if I exclude COPD, Age (we have decreased lung functions as we age, but we do not have a death sentence as if we had COPD), is it being out of shape?, is it symptoms of Anxiety and Panic. I thought it could be combination of 1, 2, or all three,but none have a death sentence to them. Again you partially answered it with the lack of fitness over 7 years.

I think it will progress further, comment if you like.

I will keep you informed. Thanks for your patience, your help, and your expertise.