Schematic illustration of the relation between LNT, thresholds,
<p>and hormesis at chronic irradiation. When DDREF = 1 by acute and
intensive irradiation, dose–response approximates a linear line in a
limited dose range at higher doses. Even with acute irradiation,
radiation effects of lower doses are nullified by powerful and
efficient defense mechanisms in which adaptive response induces
hormesis. When DDREF &gt; 1 by chronic and mild irradiation, low and
mild doses are under a range of adaptive response and hormesis
occurs. The limit of the defense capacity determines a threshold. At
high doses beyond the threshold, adverse effects appear. A linear
response (dashed line) is realized transiently in a limited dose range
</p>
immediately before the downturn
Sutou, S.
CC BY 4.0
Sutou, S. A message to Fukushima: nothing to fear but fear itself. Genes and Environ 38, 12 (2016). <a rel="nofollow" class="external free" href="https://doi.org/10.1186/s41021-016-0039-7">https://doi.org/10.1186/s41021-016-0039-7</a>