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Category Archives: Hormesis
NCRP Report No. 136 – How to ignore data that contradict the LNT hypothesis
(Jun. 14, 2006) The International Commission for Radiological Protection (ICRP) adopted the linear nonthreshold model of radiation risk to simplify the administration of radiation protection. (ICRP 1977) At that time there were already several good epidemiological studies that contradicted the assumption. It had been known since 1973 (Frigerio, et. al.) that the 7 western U.S. states with the highest background radiation have cancer death rates 15% lower than the average for the 48 contiguous states (P<10-5). Continue reading
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NCRP Report No. 136 – How to ignore data that contradict the LNT hypothesis
(June 14, 2006) The International Commission for Radiological Protection (ICRP) adopted the linear nonthreshold model of radiation risk to simplify the administration of radiation protection. (ICRP 1977) At that time there were already several good epidemiological studies that contradicted the assumption. Continue reading
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Nuclear shipyard worker study (1980–1988): a large cohort exposed to low-dose-rate gamma radiation
(June 2, 2005) A summary of the 1991 Final Report of the Nuclear Shipyard Worker Study (NSWS), a very comprehensive study of occupational radiation exposure in the US. The NSWS compared three cohorts: a high-dose cohort of 27,872 nuclear workers, a low dose cohort of 10,348 workers, and a control cohort of 32,510 unexposed shipyard workers. Continue reading
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Nuclear shipyard worker study (1980–1988): a large cohort exposed to low-dose-rate gamma radiation
(Jun. 2, 2005) Information from the unpublished 1991 Final Report of the Nuclear Shipyard Worker Study (NSWS). The NSWS is the world’s largest and most thorough study of health effects of low-dose- rate ionising radiation to nuclear workers. Continue reading
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Hormetic Influence of Glucocorticoids on Human Memory
(January 1, 2005) In this paper, we discuss the effects of glucocorticoids on human learning and memory using the recent model of hormesis proposed by Calabrese and collaborators. Continue reading
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Hormetic influence of glucocorticoids on human memory
(Jan. 1, 2005) Discussion of the effects of glucocorticoids on human learning and memory using the recent model of hormesis proposed by Calabrese and collaborators. Continue reading
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Radiation Risk in Perspective
(August 1, 2004) In accordance with current knowledge of radiation health risks, the Health Physics Society recommends against quantitative estimation of health risks below an individual dose of 5 rem1 in one year or a lifetime dose of 10 rem above that received from natural sources. Continue reading
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Radiation risk in perspective
(Aug. 1, 2004) In accordance with current knowledge of radiation health risks, the Health Physics Society recommends against quantitative estimation of health risks below an individual dose of 5 rem1 in one year or a lifetime dose of 10 rem above that received from natural sources. Doses from natural background radiation in the United States average about 0.3 rem per year. A dose of 5 rem will be accumulated in the first 17 years of life and about 25 rem in a lifetime of 80 years. Continue reading
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Radiation Hormesis: Demonstrated, Deconstructed, Denied, Dismissed, and Some Implications for Public Policy
(August 1, 2003) Journal of Scientic Exploration, Vol. 17, No.3 Continue reading
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Radiation Hormesis: Demonstrated, deconstructed, denied, dismissed, and some implications for public policy
(Aug. 1, 2003) The prevailing view of regulatory agencies and advisory groups is that all radiation is bad for health, and exposure to any form of it should be minimized. While high-dose radiation, regardless of source or intention, is harmful to health, evidence is presented that chronic doses up to 100 times those of normal ambient (including medical) exposures are beneficial, mainly due to lower cancer rates. Further evidence is presented that single, acute doses of up to 50 rad are beneficial, including in treatment of cancer and gangrene. Data are cited to show that below-ambient radiation levels are unhealthful, and that some radiation may be essential for many life-forms. Continue reading
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