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Cancer Basics

Start in this section to get answers to some of the basic questions about cancer, such as what it is, what some of the common signs and symptoms are, and how many people it affects.

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Understanding Cancer

What exactly is cancer? How long has it been around? What are the signs and symptoms of cancer? Learn about the history of cancer, get answers to common questions about cancer, and more.

Group of older cancer patients

Cancer in the United States

Learn about how common cancer is, how cancer is tracked, and the economic impact of cancer in the United States.

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Finding Cancer Information

Learn how to find reliable information on cancer, including cancer prevention and treatment.

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Cancer Basics Videos

Cut through the confusion to get the bottom-line information about cancer treatments like radiation and chemotherapy, as well as clinical trials.