I recently had a puzzling experience and wonder whether you might be able to shed some light on it. Over the past few years I’ve become increasingly unable to eat wheat without experiencing significant gastrointestinal distress, and I’ve been eating a gluten-free diet for about two years as a result. A couple of weeks ago, I traveled to Hungary and succumbed to the temptation of eating some irresistibly fabulous, crusty European bread. I figured I’d pay the price but that it would be worth it. However, nothing happened. By the end of the trip I was feasting on croissants, thin-crust...