Research Article Summary
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The article examines the historical development and ethical implications of the linear no-threshold (LNT) model as the dominant framework for assessing cancer risk from ionizing radiation exposure.
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It reviews how the LNT model emerged from mid-20th century radiobiological and epidemiological studies and became codified in international radiation protection standards, influencing policy, regulation, and public perception.
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The analysis highlights concerns that strict adherence to LNT has shaped societal responses to radiation exposure, potentially leading to over-cautious regulation, unnecessary fear (radiophobia), and costly public health interventions disproportionate to actual risk at low dose levels.
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The article discusses ethical issues arising from the disconnect between scientific evidence and regulatory practice, including potential neglect of biological adaptive mechanisms and evidence of threshold effects in radiation response.
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It concludes by suggesting that re-evaluating the ethical basis for continued use of the LNT model — incorporating biological complexity and real-world data — could improve the scientific foundation and societal impact of radiation risk assessment policies.