http://www.ncbi.nlm....les/PMC3725699/
I have found that olive oil has some immediate effects on me, for example i never ever wake up with a morning wood, but 2 tablespoons a day of olive oil make me wake up with one.
I find i'm much more funny when i take olive oil, whenever my depression ceases my humour skyrockets and i become very funny guy.
There is more to it, but i find it surprising that simple oil could benefit depression.