Well collard greens are also a part of cruciferous veggies and is a great detoxifier do to sulfur compound glucosinoltes what this is a natural liver cleaner,now collard greens also help with fighting cancer you see the vitamin C has antioxidant properties that fight oxidation in the body.Plus with a high amount of vitamin K collard greens help to keep your bones very strong you see collard greens are very beneficial because just one cup has 100% needed of vitamin K per day.there are so many vitamins and minerals in collard greens one should eat this at least three times a week.Go greens