I am non celiac gluten sensitive.i react to modified maize starch,corn derived stuff and oats even gluten-free and chest tightness is the symptom I get after being glutened.lasts about 24/48 hours.stomach slows up digesting so feel really off for a couple of days.ive had in excess of 21 ecg's due to it.all fine as are lungs.drs must think I'm nuts.