EPA is the good stuff
I've been taking a commercial product, "Vegepa" in high dose for several years - since I first read Prof. Basant Puri's book on it helping ME.
It contains
no DHA, Prof. Puri seemed to think this was important.
I do find it helps a lot - I recently ran out and took a different (purified) stuff from the high street ("eye q", which had DHA in it) for a couple of months.
During this period, my brain-fog reappeared and so did the business of "somebody turning the gravity up" again.
I got hold of my supply of the Vegepa, and within a week and a half, gravity was normal and the fog had gone.
I'm sticking with it. I'm absolutely convinced it does a whole load of good.
(Even if it is just my own personal, anecdotal, "evidence-based-medicine"
)
It's not a cure, I just sort of think it helps me to be the best I can be with ME.