A growing stack of evidence shows compounds called glucosinolates found in crops like kale may suppress the development of cancer cells from the colon, lungs, liver, bladder, breast and stomach. Suttons and Exeter University tested various cruciferous veg for glucosinolates and Kale Black Magic showed by far the highest levels of all, with more than 5x the levels of some of the others. A newish, cut and come again variety, bred for the British climate, it makes a great addition to the diet but would look great in a potager border too!