This is a link to an explanation about wheat allergy (called a "brain allergy"). Thought you might be interested in this one. Here's the address:

www.alternativementalhealth.com/articles/brainallergies.htm

This isn't the original article I read, but it gives you some idea of how an allergy to wheat (and a few other foods that are most commonly reactive in brain allergies) affects the brain, and consequently, the feeling tone of the individual.

Genetic