What is Gluten Intolerance? Gluten sensitivity or intolerance is a condition that causes a person to react after ingesting gluten, a protein found in wheat, barley and rye. Gluten causes an autoimmune response in the body which damages the small intestine. It’s estimated that 99% of the people who have either gluten intolerance or celiac disease are … Continue reading 11 Signs of Gluten Intolerance That Most People Ignore