It sounds to me like the reaction you have to food containing gluten
involves an overactive response by your adrenal system (the anger, the pounding heart). Gluten
allergies can affect the body in so many ways--rashes, mouth ulcers, calcifications. I get hypothyroid when I eat too much of any grain, or eggs, or dairy, often in a matter of minutes, and then I have delayed reactions--acne, migraines, night sweats--for a day or two afterwards.