Seven years ago at the age of 55 I had a very nasty gastro-intestinal virus which led to CFS and IBS.  Because of the severity of the IBS, I had many tests - some nasty, with scary implications.  Finally, a very helpful dietitian (who works closely with the RPAH allergy unit) put me onto the elimination diet nearly 2 years ago.  We have found that I have numerous intolerances:  lactose, gluten, salicylates, amines, soy, MSG, sorbitol, sulphites, benzoates, annatto - to name a few.... – by email