In a study by J.R. Biesiekierski et al. "Gluten Causes Gastrointestinal Symptoms in Subjects Without Celiac Disease: A Double-Blind Randomized Placebo-Controlled Trial", investigators at the Monash University Department of Medicine and Gastroenterology have found evidence that gluten intolerance can cause gastrointestinal symptoms in non-celiac individuals. Read the summary.
Am J Gastroenterol. 2011 Mar;106(3):508-14; quiz 515. Epub 2011 Jan 11.