--like a job for celiac testing.

There seems to be a good deal of anecdotal evidence that many of the people who react most strongly to simple sugars may also have problems processing gluten proteins. No one is quite sure why, but it may be that the inability to absorb nutrients caused by celiac leads to the "craving" of having to replenish, and the brain wants to replenish with the fastest, simplest things to process as possible. Of course, this is ultimately not good for the other parts of the body, especially the insulin signalling and fat storage systems.