>Allergies to common foods are increasing rapidly as well

Is there a list of stats for incidence of food allergies? It seems many friends I know (in EU) have food allergies to things like cucumber, hazel, peanuts, also gluten (celiax or something). One person I know has Crohn's disease. I would be curious to see the stats in both US and EU to see if it's really linked to a region's food. Or if it's just that common diets across the world are causing it.

Edit: or a third possibility is that rates haven't changed at all and it could be increase in either reporting or population making it seem like it's more commom now than before.