Although all vegetables have nutrients and some protective powers, for these vegetables, it’s off the charts. Cruciferous vegetables have a special chemical composition: They have sulfur-containing compounds that are responsible for their pungent flavors. When they’re broken down by biting, blending, or chopping, a chemical reaction occurs that converts these sulfur-containing compounds into isothiocyanates (ITCs). ITCs prevent and knock out cancer and have infinite proven immune-boosting capabilities.