This is a good thought, thanks -- I didn't. According to a breathing test I took, my lungs are operating normally, despite my paralyzed diaphragm. It's kind of perplexing, frankly; but I think other organs floating up into my chest cavity due to the fact my paralyzed diaphragm is floating and not holding them back is reducing my lung capacity, leading to shortness of breath. That's the conclusion I've reached, which could be totally wrong. My skin is pretty dry, so a humidifier well help that, if not my lungs. Additionally, I've noticed I really breath well before I fall asleep with my CPAP machine, which gives off water vapor. I think I'm going to ask for a video conference with a pulmonologist at Mayo for a second opinion on my condition. I don't know if you can recommend specific doctors on MayoConnect; but if you or others can, I would really appreciate getting a suggestion for a pulmonologist at Mayo. They have decades of my medical records so are quite familiar with my body. Thanks for the countless hours you put in helping people on MayoConnect! Best wishes for a happy healthy new year. Nancy