Arather startling statistic opened the eyes of many on our committee when they were invited to undertake a study for the Institute of Medicine (IOM) on cancer survivorship. The eye-opening statistic describes a burgeoning population of cancer survivors who live among us today and who are more than 10 million strong. Cancer survivors swell the ranks of the many places where we live, work, and play, yet, as our committee concluded, they remain largely understudied and lost to follow-up by our scientific research and health services delivery communities, respectively. Although the concept of survivorship is not new, we have determined there are times when trends in medical science, health.