I have discovered something that I think is very important and I just want to share the info.
For those who just want the take home message - reducing Omega 6 in the diet and increasing Omega 3 (specifically by taking the DHA in fish oil) can possibly reduce arterial pressures. Everything you think is healthy, such as veg oils and seed fats, is throwing your Omega6/3 ratio out of whack and that increases the amount of Arachadonic Acid you produce...which metabolises into substances that cause inflammation and vasoconstriction.
Even reading back over this myself I think I sound like a snake oil salesman, lol. I think it is best if I just share what I have learned by linking you to some articles and research and let you come to your own conclusions.
lifeextension.com/Protocols...
This first article might not seem related but it's where I first learned about the 5-LOX pathway and Arachadonic Acid(AA). When I googled AA and PAH, I got this result:
ncbi.nlm.nih.gov/pmc/articl...
These are the two main articles that describe in detail how and why the DHA in fish oil - and reducing your intake of Omega 6 - can have very positive health benefits and reverse inflammation. In the 2nd link, the researchers found a 'profound' reduction in PAP.
I think it is worth a closer look by all of us dealing with pulmonary disorders. I guess it is important to remind you that you shouldn't take anything without checking with your respiratory team or doctor first. If you plan to start a supplement, I would recommend taking fish oil rather than cod liver oil because you need to take a large dose to get enough DHA and as cod liver oil contains vit A, it would be easy to find you are getting too much vit A.
Lung problems, methotrexate and folic acid
Pulmonary Emphysema Associated with Heavy Asbestos Exposer 
Nice recipe for chilly days
