Dr. Travis Stork shares that this year approximately 1.7 million people in the U.S. will be affected by cancer.

Pfizer's Chief Medical Officer Dr. Freda Lewis-Hall joins The Doctors to answer viewers questions about defining cancer and understanding the different stages and risk factors.

For more information on the complex issue of staging cancer, plus much more visit the Get Healthy Stay Healthy website.

*Sponsored Content by Pfizer