Beets have such a wide range of health benefits because of their nutritional content, including vitamins, minerals and organic compounds like carotenoids, lutein/zeaxanthin, glycine, betaine, dietary fiber, vitamin C, magnesium, iron, copper and phosphorus, while also being a source of beneficial flavonoids called anthocyanins. They are very low in calories, with no cholesterol, but they do have the highest sugar content of all vegetables.