Flax seeds have been around for a long time and they certainly deliver when it comes to nutrition. These small, but mighty seeds are packed with protein, fiber, and omega-3 fatty acids. They are also rich in lignans, which can help clean your gut, among other great health benefits.
It's best to use flax seed meal, as it is difficult for your digestive system to break down the hull of the seed. Sprinkle it in baked goods, smoothies, or cereals.