A gluten-free diet excludes gluten, found in wheat, barley, and rye, and is crucial for those with celiac disease, gluten sensitivity, or wheat allergy. Avoiding wheat-based products like bread and pasta, opting for gluten-free grains like rice and quinoa can relieve symptoms and prevent complications, for some it aids in weight management and raises awareness of healthier food choices. Be cautious of cross-contamination and check labels for gluten-free certification. Focus on whole foods like fruits, vegetables, lean proteins, and naturally gluten-free grains. Gluten-free alternatives are available for common foods.