Kale is one of the most nutrient rich foods known. It is packed with vitamin K, antioxidants and fiber, which make it great for diabetes prevention and treatment. Like other green vegetables, it contains chlorophyll, which might reduce the risk of cancer. Similar anti-cancer effects in kale come from high amounts of vitamin C, selenium and other antioxidants. Loaded with vitamin K that helps blood clotting and rich in calcium and phosphorus, kale is a good choice to keep bones healthy. Combination of vitamin C and A in kale support skin and hair growth and antioxidants lutein and zeaxanthin make it beneficial for eye health. Kale is high in nitrates, which help boosting physical performance in athletes and iron, helping supply muscles with oxygen.