- What are x-rays and gamma rays?
- How are people exposed to x-rays and gamma rays?
- Natural background radiation
- Medical radiation
- Other sources of man-made radiation
- Do x-rays and gamma rays cause cancer?
- Do x-rays and gamma rays cause any other health problems?
- Can I avoid exposure to radiation from x-rays and gamma rays?
- Additional resources
More information from your American Cancer Society
The following related information may also be helpful to you. These materials may be viewed on our web site or ordered from our toll-free number, at 1-800-227-2345.
National organizations and Web sites*
In addition to the American Cancer Society, other sources of information and support include:
Environmental Protection Agency (EPA)
Web site: www.epa.gov
Understanding Radiation: www.epa.gov/radiation/understanding-radiation-overview.html
Food and Drug Administration (FDA)
Web site: www.fda.gov
Information about radiation emitting products (including imaging tests): www.fda.gov/Radiation-EmittingProducts/default.htm
National Cancer Institute (NCI)
Toll-free number: 1-800-422-6237 (1-800-4-CANCER)
Web site: www.cancer.gov
National Institute of Environmental Health Sciences
Web site: www.niehs.nih.gov
No matter who you are, we can help. Contact us anytime, day or night, for information and support. Call us at 1-800-227-2345 or visit www.cancer.org.
Last Medical Review: 05/02/2013
Last Revised: 04/18/2014