The broccoli contains radish sulfide, which has antioxidant and anticarcinogenic properties, and also kills the Helicobacter pylori bacteria that cause stomach ulcers and cancer. Radish sulfide has an inhibitory effect on liver cancer, colon cancer, breast cancer, prostate cancer, etc. It induces Phase II type enzyme, which activates the production of anticancer substances and kills leukemia cells; in addition, radish sulfide adjusts the outermost immune system of human beings, the skin, and strengthens the human immune system. Radish sulfide can activate a signaling channel called NRF2. Once this signaling channel fails to function, human macrophages are unable to remove dead cells and foreign bacteria from the lungs, thus making it impossible to keep the lungs clean and leading to infection.