Kale is a very popular vegetable from the cabbage family. It holds negligible amount of fat, yet stores high quantities of omega-3 fatty acid called alpha linolenic-acid. Being an incredibly low calorie vegetable, it is a favorite among all those on diet. Kale ranks high among the most nutrient-rich food and plays a big role in lowering Cholesterol level and has shown protective properties against the growth of cancerous cells in the body.