Understanding Cancer Statistics Lifetime cancer risk is one person's chance of getting or dying of cancer over a lifetime. That risk changes based on the person's age. Parental Cancer: Questions and Answers About Changes in Family Rhythms and Routines Talking with your family about cancer and the emotions that arise is not a one-time discussion, but rather a series of talks that will continue through your treatment. Cancer FAQ Cancer Overview Cancer cells don't function properly, and they can spread to many areas of the body. Tumors are clusters of cells that are capable of growing and dividing uncontrollably; their growth is not regulated.