Originally Posted by An Undocumented Worker
I don't eat any fish whatsoever, and don't have any depression. I don't buy it.
However there has been a link to dietary fat/cholesterol to depression. That being fats are necessary for mental health, and vegetarians as group are more prone to depression.
You do realize that a sample of 1 is worthless? (And DHA is found in lots of other things besides fish -- fish is just the most famous example of Omega 3 / DHA source)
There are lots of other studies that confirm mental wellness and DHA link of some sort.