human
I've heard that a lot of people are switching to a gluten-free diet. What does that mean?
assistant
A gluten-free diet is a diet that excludes foods containing gluten, which is a protein found in wheat, rye, and barley. People who have celiac disease or gluten sensitivity must follow a gluten-free diet because they can't digest the gluten proteins properly. Other people may choose to go gluten-free for various reasons such as weight loss, improved digestion, or better health.