I think that knowing the primary cause would benefit you if it was due to a lifestyle choice, i.e. smoking or a job that exposes you to dangerous chemicals. I have battled this disease for five years, I basically blamed it on having smoked in my life and I feel certain that the doctors did as well. Sadly, at the end of the day I don’t think that knowing the primary source is always a benefit unless you’re still doing things that made you sick in the first place. I truly researched this disease from day one and I hang onto the hope that they are making more progress with better treatments, amen.