"NRC has not made a revision yet, and has been hearing that the Part 20 exposure (external only) should be taken from the existing 100 mr [milliroentgen] a year, per license, to 500 mr a year, and in view of some, even to 10 Rems [Roentgen Equivalent Man], which would be 100 times the current level," reads the letter.
In 2021, noted PSR, the NRC "roundly rejected" a petition "to raise allowable radiation exposures for all Americans, including children and pregnant women, to 10 Rems a year."
The revision to radiation limit standards would result in anywhere from 5-100 times less protection for Americans, said the groups, with 4 out of 5 adult males exposed over a 70-year lifetime developing cancer that they otherwise would not have.
"Radiation is dangerous for everyone,” said Amanda M. Nichols, lead author of the 2024 study Gender and Ionizing Radiation. “[Trump’s] executive order will allow the industry to relax the current standards for radiological protection, which are already far from adequate. This will have detrimental health consequences for humans and for our shared environments and puts us all at higher risk for negative health consequences. ”
The change in standards would be even more consequential for women, including pregnant women, and children—all of whom are disproportionately susceptible to health impacts of ionizing radiation, compared to adult males.
"Radiation causes infertility, loss of pregnancy, birth complications and defects, as well as solid tumor cancer, leukemia, non-cancer outcomes including cardiovascular disease, increased incidence of autoimmune disease, and ongoing new findings.”
In Gender and Ionizing Radiation, Nichols and biologist Mary Olson examined atomic bomb survivor data and found that young girls "face twice the risk as boys of the same age, and have four to five times the risk of developing cancer later in life than a woman exposed in adulthood."
Despite the risks to some of the country's most vulnerable people, Trump has also called for a revision of "the basis of the NRC regulation," reads Friday's letter: the Linear No Threshold (LNT) model, the principle that there is no safe level of radiation and that cancer risk to proportional to dose.
The LNT model is supported by decades of peer-reviewed research, the letter states, but one of Trump's executive orders calls for "an additional weakening of protection by setting a threshold, or level, below which radiation exposure would not 'count' or be considered as to have not occurred."
The Standards for Protection Against Radiation are "based on the well-documented findings that even exposures so small that they cannot be measured may, sometimes, result in fatal cancer," reads the letter. "The only way to reduce risk to zero requires zero radiation exposure."
Trump's orders "would undermine public trust by falsely claiming that the NRC’s radiation risk models lack scientific basis, despite decades of peer-reviewed evidence and international consensus supporting the LNT model," it adds.
The signatories noted that the US government could and should strengthen radiation regulations by ending its reliance on "Reference Man"—a model that the NRC uses to create its risk assessments, which is based on a young adult male and fails to reflect the greater impact on infants, young children, and women.
“Newer research has shown that external radiation harms children more than adults and female bodies more than male bodies," reads the letter. "Existing standards should therefore be strengthened to account for these life-stage and gender disparities… not weakened. Radiation causes infertility, loss of pregnancy, birth complications and defects, as well as solid tumor cancer, leukemia, non-cancer outcomes including cardiovascular disease, increased incidence of autoimmune disease, and ongoing new findings.”
Olson, who is the CEO of the Generational Radiation Impact Project, which also helped organize the letter, warned that "radiation causes cancer in women at twice the rate of adult men, while the same exposure in early childhood, will, across their lifetimes, produce seven times more cancer in young females, and four times more in young males.”
The groups emphasized that "executive orders do not have the power to require federal agencies to take actions that violate their governing statutes, nor to grant them powers and authorities that contradict those governing statutes. The NRC needs to stand up to the executive order’s marching orders to 'promote' nuclear power—a mission outside its legal regulatory mandate under the Energy Reorganization Act of 1974 and the concurrent amendments to the Atomic Energy Act."
Federal agencies including the NRC, they added, "should not favor industry propaganda asserting that some radiation is safe over science-based protection of the public. This is a deliberate subversion of science and public health in favor of corporate interests."
