Beyond celiac disease: experts find a related condition that improves on a gluten-free diet and worsens when gluten is eaten.
People who feel better when they cut gluten out of their diets may not necessarily have celiac disease. "Non-celiac gluten sensitivity" is how this alternate condition is being described by celiac experts. According to this article in The New York Times, it is unknown how many may have this condition, and details about diagnosis remain sketchy. However, "many advocates of gluten-free diets warn that non-celiac gluten sensitivity is a wide, unseen epidemic..." according to the article.