Cancer.gov provides detailed information about the different types of cancer and how they are treated, with a special emphasis on cancer research.
The National Cancer Institute (NCI), which is part of the U.S. National Institutes of Health, publishes the website and prepares its content.
Information includes About Cancer (discussing cancer in general, including causes, diagnosis, treatment, coping and managing care); Cancer Types (discussing each type of cancer in detail with patient and profession versions); Fact Sheets for a variety of topics related to cancer, such as specific risk factors and types of treatment; NCI Dictionaries of Cancer Terms, Drugs, and Genetics Terms; and a Cancer Information Service that answers questions by phone, email and live chat.
Tips for use: Click Espanol on the upper right for the website in Spanish.
Reviewed October 2025