I know that Omega 3s are essential fatty acids and you need to supplement with fish oil. I Googled omega 3s and Wikipedia states that ALA (Alpha linolenic acid) is also an essential fatty acid. I know that ALA is the short chain fatty acid "pre-curser" for epa and dha but also has a very low conversion rate. I also know that all the research of the benefits of Omega 3s focus on DHA and EPA. That all being said if I consume an adequate amount of the long chain omega 3s DHA and EPA would ALA still be essential in the diet for reasons other than converting into DHA and EPA or could I simply ignore walnuts and flax seeds?