Need Links to Diet Studies....

I’m about to write an essay on the links between poverty and art; but I wanted to make the essay less directed towards that (because I can) and write at least a part of it about the relation of diet to children’s behaviour and education etc. I think that that would make the essay a bit more interesting than the standard English literature essay!

I have a few sources about poverty and childhood obesity, but I was wondering if anyone could give me the titles of some journals or sites that I could read up on about diet and mental health, for example.

Thanks a lot!