Gluten is a protein found in wheat, barley, and rye. Some people react to it — but not always for the same reason.
Celiac disease is an autoimmune condition where gluten damages the small intestine. It affects about 1% of people and requires a strict gluten-free diet.
But many people who feel sick after eating gluten don’t have celiac disease. This is called non-celiac gluten sensitivity (NCGS). Symptoms can include bloating, gas, stomach pain, brain fog, fatigue, headaches, joint pain, or mood changes. These symptoms usually improve when gluten is removed and return when it’s added back.
Interestingly, studies show that some people who think they react to gluten may actually be reacting to fructans — a type of carbohydrate found in wheat that can cause gas and bloating.
A simple elimination-and-challenge diet often helps you discover what your body is really reacting to. Getting tested for celiac disease is advisable.
Click here an in-depth article with links to the scientific literature.