" For instance, sulforaphane, considered one of the more active components in cruciferous vegetables, kills human leukemia cells in a petri dish while having little impact on the growth of normal cells.8 As we’ve discussed, cruciferous vegetables include broccoli, cauliflower, and kale, but there are many others in this family, such as collard greens, watercress, bok choy, kohlrabi, rutabaga, turnips, arugula, radishes (including horseradish), wasabi, and all types of cabbage. "

― Michael Greger , How Not to Die: Discover the Foods Scientifically Proven to Prevent and Reverse Disease