Cancer is a dreaded disease, which is a leading cause of deaths throughout the world. While science has not found a cure for many types of cancer, advancement in medicine and technology has helped reduce deaths or prolong the lives of patients who have cancer. The choice and outcome of treatments often depend on the type of cancer, the stage when it was diagnosed, and the general health of the individual. But for most people, doctors and patients alike, the best way to deal with cancer is to avoid it or to reduce one’s chances of developing it.