Our ornamental cabbages not only look great, they have numerous health benefits too. Diet & Digestion One cup of kale has only 36 calories and 0 grams of fat. Furthermore, one cup contains nearly 20% of the RDA of dietary fiber, which promotes regular digestion, prevents constipation, lowers blood sugar and curbs overeating. Is loaded with Antioxidants Kale is a superstar in the arena of carotenoids and flavonoids, two powerful antioxidants that protect our cells from free radicals that cause oxidative stress. Also has Vitamin K, Vitamin A, & Vitamin C