Legumes are loaded with antioxidants, and adzuki beans are no exception. The small, dark red beans have a sweet, nutty flavor and are often used in Asian desserts. They are easy to digest and filled with flavonoids, which are part of a bigger family of antioxidants called polyphenols. These compounds may lower your risk of heart disease, cancer, and stroke. Among beans, adzukis are one of the highest in protein and lowest in fat. Other benefits include high levels of potassium and fiber, B vitamins, and minerals such as iron and zinc.