Mucous production is a general indication of allergies. Eating foods over and over can make a person that is susceptible to this induce an allergy to that food. Who’s to say, but its an idea. Also, something to think about, after a person developes an allergy to anything that they contact on a daily basis, if they eliminate that contact for a few days, they unwind the bodys response to help deal with those reactions. That is called unmasking. Upon re-exposure, symptoms are worse. Headache and dizziness are typical low blood sugar symptoms. If you’ve been on that strict of a diet for that long, I dont think eliminating any more food items is going to make a dent in your symptoms, not candida related anyways.