Since I became a vegatarian, my mood has improved incredibly.

I agree that you should stay away from sugars because they spike your mood and your energy, and when it goes back down again, you get to be in a lousy mood.

I learned that from drinking magaritas. The mix is full of sugar and i get in a great mood, and about an hour later, I am in the worst mood possible. I get a sugar high and then crash back down again.

So, I do think that foods affect your mood.