What Are the Preventions of Blood Cancer? The prevention of blood cancer involves avoiding high-dose radiation, tobacco and other substances that can harm your health. Several lifestyle factors may be associated with increased risk of blood cancer. A weakened immune system is one risk factor. Exposure to certain industrial chemicals and other substances may also increase the risk of blood cancer. Radiation exposure from sources outside of medical care can also increase your risk of developing blood cancer. Race, sex and age are also factors that influence your susceptibility ...   read more