A Revised System of Radiological Protection Is Needed.

Area of Science:

• Radiological protection
• Radiation epidemiology
• Risk assessment

Background:

• The current system of radiological protection relies on the linear no-threshold (LNT) theory for ionizing radiation exposure.
• The LNT model has been used for nearly 70 years to assess health detriment, including cancer induction.
• This system has been criticized for promoting radiation phobia and causing harm, as seen in the Fukushima and Chernobyl nuclear accidents.

Purpose of the Study:

• To correct the scientific error of discarding risk uncertainty in low-dose radiation exposure assessments.
• To demonstrate the impact of correcting this error on the understanding of radiation risks.
• To advocate for a revised system of radiological protection.

Main Methods:

• Critically analyze data analysis procedures used in radiation epidemiology.
• Focus on the unscientific practice of removing excess relative risk uncertainty as radiation dose approaches zero.
• Evaluate the implications of including risk uncertainty in dose-response models.

Main Results:

• The LNT model's implication of harm from very low radiation doses is challenged by the inclusion of risk uncertainty.
• Discarding uncertainty in risk assessment leads to an unscientific overestimation of radiation risks.
• The current reliance on LNT theory for radiological protection is undermined by these findings.

Conclusions:

• A revised system of radiological protection is necessary, moving beyond the limitations of the LNT model.
• Accurate risk assessment requires acknowledging and incorporating uncertainty, especially at low radiation doses.
• The unscientific exclusion of risk uncertainty has significant public health and safety implications.