The National Council on Radiation Protection and Measurements (a body commissioned by the United States Congress).NCRP report. Ncrppublications.org. Retrieved on 5 May 2012. endorsed the LNT model in a 2001 report that attempted to survey existing literature critical of the model. The United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) wrote in its 2000 reportUntil the ...%DIFDELCMD < ] %%% uncertainties on low-dose response are resolved, the Committee believes that an increase in the risk of tumour induction proportionate to the radiation dose is consistent with developing knowledge and that it remains, accordingly, the most scientifically defensible approximation of low-dose response. However, a strictly linear dose response should not be expected in all circumstances. the United States Environmental Protection Agency also endorses the LNT model in its 2011 report on radiogenic cancer risk:Underlying the risk models is a large body of epidemiological and radiobiological data. In general, results from both lines of research are consistent with a linear, no-threshold dose (LNT) response model in which the risk of inducing a cancer in an irradiated tissue by low doses of radiation is proportional to the dose to that tissue . Oppose A number of organisations disagree with using the Linear no-threshold model to estimate risk from environmental and occupational low-level radiation exposure: The American Nuclear Society recommended further research on the Linear No Threshold Hypothesis before making adjustments to current radiation protection guidelines, concurring with the Health Physics Society's position that: The US Nuclear Regulatory Commission "accepts the LNT hypothesis as a conservative model for estimating radiation risk", but notes that "public health data do not absolutely establish the occurrence of cancer following exposure to low doses and dose rates – below about 10,000 mrem (100 mSv). Studies of occupational workers who are chronically exposed to low levels of radiation above normal background have shown no adverse biological effects."
The National Council on Radiation Protection and Measurements (a body commissioned by the United States Congress).NCRP report. Ncrppublications.org. Retrieved on 5 May 2012. endorsed the LNT model in a 2001 report that attempted to survey existing literature critical of the model. The United %DIFDELCMD < ] %%% States Environmental Protection Agency endorses the LNT model in its 2011 report on radiogenic cancer risk:Underlying the risk models is a large body of epidemiological and radiobiological data. In general, results from both lines of research are consistent with a linear, no-threshold dose (LNT) response model in which the risk of inducing a cancer in an irradiated tissue by low doses of radiation is proportional to the dose to that tissue UNSCEAR notably reversed its earlier support on the LNT model in 2014 (see below). Oppose A number of organisations disagree with using the Linear no-threshold model to estimate risk from environmental and occupational low-level radiation exposure: The American Nuclear Society recommended further research on the Linear No Threshold Hypothesis before making adjustments to current radiation protection guidelines, concurring with the Health Physics Society's position that: The US Nuclear Regulatory Commission : UNSCEAR in 2014 reverted its previous position and stated:
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Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) wrote in its 2000 reportUntil the
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uncertainties on low-dose response are resolved, the Committee believes that an increase in the risk of tumour induction proportionate to the radiation dose is consistent with developing knowledge and that it remains, accordingly, the most scientifically defensible approximation of low-dose response. However, a strictly linear dose response should not be expected in all circumstances. the United
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UNSCEAR notably reversed its earlier support on the LNT model in 2014 (see below).
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"accepts the LNT hypothesis as a conservative model for estimating radiation risk", but notes that "public health data do not absolutely establish the occurrence of cancer following exposure to low doses and dose rates – below about 10,000 mrem (100 mSv). Studies of occupational workers who are chronically exposed to low levels of radiation above normal background have shown no adverse biological effects."
: UNSCEAR in 2014 reverted its previous position and stated: