Whether buckwheat groats are suitable for a paleo diet depends on the person's viewpoint. The paleo diet focuses on foods our ancient ancestors ate, like meat, veggies, fruits, and nuts, while avoiding grains and processed foods. Some paleo followers avoid buckwheat because it wasn't eaten by ancient people and contains lectins. However, others include buckwheat in their paleo diet because of it's high nutrition profile (rich in protein, vitamins and minerals), is not a grain but a seed, and is gluten-free.