Much of the rest of the story[my point of view wrt importance of EPA/AA ratio in human system as a measure of suppression of inflammation and disease in our systems, shared by others in cardiology and elsewhere: I am not an M.D.]:
BTW: I now weigh ~ 160 lbs, a slow drop from 187 lbs max 2-3+ years ago; 160 lbs is what I weighed 61 years ago in college, the ideal weight for my then height at age 19.