In ancient times, beets had elongated roots like carrots and the globular red beet we now eat was only hybridized about 300 years ago. Beets have the highest sugar content of all the vegetables and are becoming popularly used as a sweetening substitute. Beet juice and beet powder are used to flavor carrot, celery, and other vegetable juices, and also to color a variety of foods. Beet Root contains betaine (the same as the nutritional supplement trimethylglycine, not the same as betaine hydrochloride), and also alanine, alantoin, arginine, beta-carotene, calcium, fiber (about 10% by weight), GABA, glycine, histidine, magnesium, pantothenic acid (vitamin B5), phosphorous, potassium, selenium, thiamine (vitamin B1), tryptophan, tyrosine, vitamin C, zinc, and, interestingly, although not in nutritionally significant amounts, zirconium.