The role of gluten in the diet is complex. Gluten is a protein found in grains such as wheat, barley, and rye. For most people, gluten is safe and provides essential nutrients when consumed in moderation. However, individuals with conditions like celiac disease or gluten sensitivity must avoid gluten, as it can trigger harmful reactions. For others, a gluten-free diet may not provide additional health benefits and could lead to nutritional deficiencies if not properly planned. Understanding gluten's role is essential for making personalized dietary choices.