Risks of low doses and low dose rates, such as from elevated natural background radiation exposures, appear not to exist or be lower than such risks that one assumes by applying the LNT model in the evaluation of epidemiological data. This and the unequivocal evidence of experimental findings of adaptive protection speak against the LNT hypothesis, which should be replaced by a model that takes into consideration that low doses can induce alterations in the physiologically individual balance between cancer causation and cancer prevention.

Source: Cancer Mortality Among People Living in Areas With Various Levels of Natural Background Radiation