Comment by enziobodoni

That's not a double blind experiment, but I'd agree it points to an intolerance. Actual experiments, I will reiterate, are hard to do. Have you tried feeding your wife food devoid of known triggers but told her they were in the food? I would hope not, because it's not an ethical thing to do, but you need that sort of thing to nail it down. Also, since she seems to accidentally eat food of unknown provenance, can you be sure the times she's gotten away with it without symptoms that the food in question was truly devoid of triggers? In others words, it is very very easy to confirm that things are bad for you, correctly or not.