Tryptophan is a kind of protein which are made up of amino acids. They can be very diverse. I haven't come across milk leading to increase of serotonin, but cocoa (dark chocolate the purer the better) certainly does, and as far I read bananas stimulate it as well.
People though who suffer from conditions related to low serotonine level usually produce enough of it, instead a balancing mechanism (reuptake) is overworking owing to which the brain's certain messages to move on to the next step or challenge can't go through. Nothing works as effective on this failure as medication that specificly aims to regulate the serotonin reuptake (e. G.
Sertraline aka Zoloft). More.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.