According to WebMD, one cup of kale contains 36 calories, 5 grams of fiber, and 15% of the daily requirement of calcium and vitamin B6 (pyridoxine), 40% of magnesium, 180% of vitamin A, 200% of vitamin C, and 1,020% of vitamin K. It is also a good source of minerals copper, potassium, iron, manganese, and phosphorus.
Now I know you all want to run out and get some right now! Before you do let me also say that it’s rich in antioxidants and can lower your risk for cancer. Some of kale’s nutrition content is even enhanced when cooked. You can’t beat that!
Kale is such a power house of nutrients that it’s crazy to say that there would be any draw backs but there are some. Kale has a natural occurring substance called oxalate which can get in the way of calcium absorption. If you’re taking anticoagulants, too much vitamin K can pose a problem to your health so consult your doctor before adding kale to your diet. For most of the population though this isn’t the case.