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.

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.

Many people don't realize that they could be at risk for getting another cancer after having been successfully treated for the first one. This risk is low, however.

The term "cancer" refers to a group of diseases in which cells have uncontrolled growth and spread throughout the body.

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.

Certain risk factors increase the chance that a person will develop cancer. Many of these factors, such as smoking or eating an unhealthy diet, can be avoided. Others, such as family history and aging, can't, but everyone can benefit by avoiding known cancer risks.