Organic Red Beets No Tops. Sweet and tender red beet. Beets are low in calories and a great source of nutrients, including fiber, folate and vitamin C. Beets also contain nitrates and pigments that may help lower blood pressure and improve athletic performance. Lastly, beets are delicious and versatile, fitting well into a healthy and balanced diet. Besides supplying good amounts of protein, phosphorus, and zinc, beet greens are also a great source of fiber. Packed with antioxidants, they’re high in vitamin B6, magnesium, potassium, copper, and manganese, and low in fat and cholesterol.