Like beans, legumes, and whole grains, quinoa is an excellent source of complex carbohydrates and fiber to balance blood sugar while providing the essential glucose the brain craves. Quinoa is also a good source for iron to keep the blood oxygenated and B vitamins to balance mood and protect blood vessels. It is also gluten free for those with sensitivities to this protein. And, like most seeds, grains, and nuts, contains phytic acid. Quinoa also contains saponins; it should be soaked overnight before cooked.