[waves]

well i would not jump the gun on the EPA being the only relevant thing here. we do not know why the doc suggested the fish oil. as i see it, it would be good to ask the doc her reason for suggesting the fish oil, to find out whether EPA intake all she is after and/or to discuss what a suitable ratio of EPA to DHA would be, for her purposes.

because it's not like DHA is junk. while DHA and EPA have some common properties, each offers distinct benefits that the other does not.

the following article suggests that if one takes a lot of DHA they should supplement with GLA as well. however the ratio of the two would depend on what your goal is.

link: What Are the Real Differences Between EPA and DHA?

To reduce cellular inflammation, you need more EPA than DHA.
Published on April 1, 2012 by Barry Sears, Ph.D. in In the Zone


the article goes on to explains the distinct benefits of EPA and DHA. EPA is strongly anti-inflammatory at a cellular level. the article emphasizes that if one seeks an anti-inflammatory effect, then EPA is the relevant oil. However, DHA is important in making membranes more fluid. both are important at a neurological level.

Summary

EPA and DHA do different things, so you need them both, especially for the brain. If your goal is reducing cellular inflammation, then you probably need more EPA than DHA. How much more? Probably twice the levels, nonetheless you always cover your bets with omega-3 fatty acids by using both EPA and DHA at the same time.