The immune system is controlling cancer cells in the body. If the immune system is healthy, usually cancer doesn't appear. When the immune system is down, the body loses control of the cancer cells and cancer appears. The powder from dandelion root has a potent phytochemical that builds up the blood and the immune system. Doctors try to remove the cancer from the body with chemotherapy and radiation. By doing so, it destroys the immune system and appetite. These two are the most important things the body needs to beat cancer.