Prevention is the best cure for cancer. Start reducing your risk today with these simple ideas. cancer rarely discriminates. It affects young and old, men and women, rich and poor. In the world’s most developed nations, and in the least, several types of cancer rank among the major causes of death. The good news is, we’re learning more and more about what causes cancer and how to prevent it. Here are 10 steps you can take now to increase your chances of living a life that’s cancer-free.