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Research Center for Japanese Electric Power Industry Refutes Application of Radiation Hormesis in Radiation Protection

Below is a translation of the June 13, 2014 statement by the Central Research Institute of Electric Power Industry (CRIEPI).


Our Opinions on Radiation Hormesis Effects
June 13, 2014

Radiation Safety Research Center
Nuclear Technology Research Laboratory
Central Research Institute of Electric Power Industry 


Currently our center is not conducting research on radiation hormesis.Based on the knowledge gained so far, we consider it difficult to generalize the effects of hormesis as the low-dose radiation effects and to incorporate them into the radiation risk assessment.There are some instances where merchandise with hormesis effects are sold with reference to our research results, but our center has nothing to do with it.

From the 1990s to the early 2000s, our center conducted studies to verify the effects of radiation hormesis. We elucidated that various hormesis-like effects were induced by low-dose radiation in animal experiments under certain conditions. However, at this time, we consider i…

Surgical and Pathological Details of Fukushima Thyroid Cancer Cases Released on August 31, 2015

Below is an English translation of the information released by Fukushima Medical University at the August 31, 2015 meeting of the 20th Oversight Committee for the Fukushima Health Management Survey. It includes surgical and pathological details of the 96 thyroid cancer cases operated on at Fukushima Medical University as of March 31, 2015. (See this post for an English translation of the previous version released on November 11, 2014).

These 96 cancer cases, along with one case post-surgically diagnosed to be a benign nodule and 7 cases operated on at other medical facilities, comprise the 104 cases (99 from the first round and 5 from the second round screening) that had undergone surgeries as of the 19th Oversight Committee Meeting for the Fukushima Health Management Survey held on May 19, 2015. This information is essentially the most updated details of the surgical cases since only one more surgical case (papillary thyroid cancer; age and tumor size unknown) was added as of June 30,…

Fukushima Thyroid Examination August 2015: 104 Thyroid Cancer Cases Confirmed, 6 in the Second Round Screening

The Twentieth Prefectural Oversight Committee for Fukushima Health Management Survey convened in Fukushima City, Fukushima Prefecture, on Monday, August 31, 2015. This marked the beginning of a new two-year term for the committee members. Most of the committee members carried over, and Dr. Hokuto Hoshi was chosen as the committee chair again. (See this post for details of the Oversight Committee members).

Among other information, the Oversight Committee released the latest results of thyroid examination, consisting of Initial Screening or the first round screening (originally scheduled to be conducted from October 2011 to March 2014, and essentially completed as of April 30, 2015 with some confirmatory examination results pending) and Full-Scale Screening or the second round screening (from April 2014 to March 2016). It has been a little over 3 months since the last committee meeting on May 19, 2015, and the latest results include 3 more months worth of data confirmed as of June 30, 20…