Flaxseed is a plant-based food that is high in fibre, antioxidants, and omega-3 fatty acids. Many of the benefits of flax seeds are due to their high level of omega-3 fatty acids, fibre, and other plant chemicals. They help with weight loss, blood sugar regulation, and heart and intestinal health. Cereals, pasta, whole grain breads and crackers, energy bars, meatless meal products, and snack foods all include flaxseed.