The Linear No-Threshold Relationship Is Inconsistent with Radiation Biologic and Experimental Data

There are potent defenses against the carcinogenic effects of ionizing radiation. Their efficacy is much higher for low doses and dose rates; this is incompatible with the LNT model but is consistent with current models of carcinogenesis. The data suggest that a combination of error-free DNA repair and elimination of preneoplastic cells furnishes practical thresholds.