Debate Invitation to Supporters of the LNT Model

March 13, 2020


Subject: An Invitation to Participate in an Open, Public, Online Debate on Radiation Hormesis


Dear Colleague(s),


We are aware of your publication(s) which recommend keeping radiation doses as low as reasonably achievable, even when radiation doses are already low. Such recommendations are based on the linear no‑threshold (LNT) model for radiation-induced cancer. However, doubts have arisen about the validity of the LNT model, because several studies have shown that following exposure to low levels of radiation, cancer risk has been observed to decrease, consistent with radiation hormesis. If these data are valid, then following your recommendations based on the LNT model would be increasing cancer risk. Hence, it is important to determine if the evidence for radiation hormesis are valid.

To help in ascertaining the validity of the evidence for radiation hormesis, an open, public, online debate on radiation hormesis has been set up at the website We request you to examine the presented evidence for radiation hormesis and refute them by participating in the debate, if you find them to be invalid.

Thank you for participating in the debate.  


Scientists for Accurate Radiation Information (SARI):

XLNT Foundation: