So many different varieties of green leafy veggies, who can tell the difference. Kale is one of those green leafy veggies, but it actually belongs to the cabbage family. Kale is one of the most nutrient-dense foods containing all sorts of beneficial compounds, some of which are used for medicinal purposes. Some of the many benefits of kale are listed below. Kale is also a low-calorie, low-fat food, making it a great option for any weight loss meal plans.