Gluten is a type of protein found in certain grains, including wheat, barley, and rye. It helps foods maintain their shape, acting like a glue that holds them together. Gluten is commonly found in bread, pasta, and many processed foods. Some people have a medical condition called celiac disease, which means they cannot eat gluten without experiencing harmful effects. Others may have gluten sensitivity, leading to discomfort after consuming gluten-containing foods. For these individuals, a gluten-free diet is essential for their health and well-being.