EVEN IF YOU’RE sick of hearing about gluten all. the. time., it’d be tough to ignore the findings of this studyby Italian researchers.

The gist: People who don’t have celiac disease who say they’re “gluten sensitive” may have a certain inflammatory protein to blame.

It’s called zonulin and, normally, it’s what helps you fight off a bout of food poisoning; so it’s technically a good thing. But, study authors believe some people release excess amounts of the stuff after consuming gluten—resulting in an onslaught of not-so-fun symptoms (“brain fog,” fatigue, bloating; see the full list here).