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04 November 2009

Answer to Question #4575 Submitted to "Ask the Experts"

Category: Radiation Effects — Low-Dose Effects

The following question was answered by an expert in the appropriate field:

Should a person be concerned with a dose of 1,082 mrem from fallout? I was a participant in Operation Hardtack, 1957-1958, at Enewetak Atoll. The Department of Energy, National Nuclear Security Administration Nevada Site Office, sent a radiation exposure history that reported that my whole-body gamma dose was 1,082 mrem.

There is no reason for concern about the radiation dose you received nearly 50 years ago. You have received a dose of about 300 mrem per year all of your life from natural (not man-made) environmental radiation. So your dose from fallout is a small fraction of your total dose. There is no conclusive evidence that such doses are even harmful.

Julian Gibbs, DDS, PhD

Answer posted on 13 June 2005. The information and material posted on this Web site is intended as general reference information only. Specific facts and circumstances may alter the concepts and applications of materials and information described herein. The information provided is not a substitute for professional advice and should not be relied upon in the absence of such professional advice specific to whatever facts and circumstances are presented in any given situation. Answers are correct at the time they are posted on the Web site. Be advised that over time, some requirements could change, new data could be made available, or Internet links could change. For answers that have been posted for several months or longer, please check the current status of the posted information prior to using the responses for specific applications.