Those who believe in the idea that radiation exposure is harmful at all levels would answer the question posed in the title “Absolutely not!” and they would probably add some comments that the question is absurd. I’ll be presumptuous to add they would say something such as, “Everyone knows any radiation exposure is harmful.” Those in that camp believe the effects of low doses of ionizing radiation can be estimated by linear extrapolation from effects caused by high doses, and that biological damage will occur unless the level is zero. Their position is supported by the linear no-threshold (LNT) theory adopted by the International Commission on Radiation Protection (ICRP) in 1959.

However, those who believe in hormesis (the word derives from the Greek word “hormaein,” which means “to excite”) would observe that many substances such as alcohol and caffeine that can be lethal at high levels have stimulating effects at low levels. There is compelling evidence that the same is true for ionizing radiation. I’ll mention that there is a cottage industry of investigators funded by government-sponsored research money looking for information to support the LNT theory. There are those in that industry who won’t like the information I’m relaying. You should also expect skepticism from people who have been taught (inculcated) that any amount of radiation is bad despite the fact that the world we live in and our own bodies are radioactive.

I am a subscriber to Access to Energy by Dr. Arthur Robinson, and he published a copyrighted article titled, Radiation and Health, in his May 2011 newsletter. It summarizes a paper, Is Chronic Radiation an Effective Prophylaxis Against Cancer? The paper was originally published in the spring 2004 edition of the Journal of American Physicians and Surgeons. The abstract of that article begins, “An extraordinary incident occurred 20 years ago in Taiwan. Recycled steel, accidentally contaminated with cobalt-60 (half-life 5.3 y) was formed into construction steel for more than 180 buildings, which 10,000 persons occupied for 9 to 20 years and unknowingly received radiation exposure.

Intensive studies were performed on the health of the exposed people. It was found that, “Based on the observed seven cancer deaths, the cancer mortality rate for this population was assessed to be 3.5 per 100,000 person years. Three children were born with congenital heart malformations, indicating a prevalence rate of 1.5 cases per 1,000 children under the age 19.” For comparison with people not exposed to the radiation in the buildings, “The average spontaneous cancer death rate in the general population of Taiwan over these 20 years is 116 per 100,000 person years…the prevalence rate of congenital malformation is 23 cases per 1,000 children.” Stated a different way, there was about 3% of the number of cancer deaths for the exposed people compared to what was expected for those in the general population. Birth defects were about 6.5% of what would be expected. Deaths from cancer of people living in the buildings steadily decreased as the time of exposure increased,and had been nearly eradicated after twenty years.

One conclusion of the report was, “It appears that significant beneficial health effects may be associated with this chronic radiation exposure.” (Emphasis added). The journal that published the article was, according to Dr. Robinson, “… immediately savaged … In this case, however, the credential lovers are overwhelmed.”  He then provides a list of the 14 authors and includes their impressive credentials. Dr. Robinson then proposes that “human cancer deaths…can be reduced 20- to 30-fold by increasing whole-body radiation they receive from their environment.”

From here.