Some interesting comments, maybe some will give you another idea?
i am getting ready to do the whole30 diet to then see what triggers me as far as pain.
Unfortunately, so little is known about some of these disorders that you really take a chance no matter what you do. At least I was bright enough to never smoke because one of mine is known to cause Lung Disease
As for Elvis...even a carrier may have problems develop due to the faulty gene.Just one study as an example looking at COPD and smoking and cancer
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2562773/