Allergy to canola oil?

Technically, one can have allergies to almost anything. I am amazed that many places use canola oil because it costs more than less healthy alternatives. The problem is that these places also put a LOT of various additives in their food and it may be one of those that you are reacting to. Suggestion: Try eating your own food at home and see if it gets better. If it does, try fixing a few of the same dishes with canola oil and see if thats a problem.