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A bottle of Radithor at the National Museum of Nuclear Science & History in New Mexico, United States Radithor was a patent medicine that is a well-known example of radioactive quackery . It consisted of triple-distilled water containing at a minimum 1 microcurie (37 kBq ) each of the radium-226 and 228 isotopes.
Alternative assumptions for the extrapolation of the cancer risk vs. radiation dose to low-dose levels, given a known risk at a high dose: supra-linearity (A), linear (B), linear-quadratic (C) and hormesis (D). Radiation hormesis is the hypothesis that low doses of ionizing radiation (within the region of and just above natural background ...
The following other wikis use this file: Usage on ar.wikipedia.org إنهاض; Usage on en.wiktionary.org hormesis; Usage on fi.wikipedia.org Hormeesi
The concept of radiation hormesis is relevant to this table – radiation hormesis is a hypothesis stating that the effects of a given acute dose may differ from the effects of an equal fractionated dose. Thus 100 mSv is considered twice in the table below – once as received over a 5-year period, and once as an acute dose, received over a ...
Hormesis has been observed in a number of cases in humans and animals exposed to chronic low doses of ionizing radiation. A-bomb survivors who received high doses exhibited shortened lifespan and increased cancer mortality, but those who received low doses had lower cancer mortality than the Japanese average. [27] [28]
The following other wikis use this file: Usage on af.wikipedia.org Radioaktiwiteit; Piktogram; Usage on ar.wikipedia.org بوابة:تقانة نووية
The validity of the LNT model, however, is disputed, and other models exist: the threshold model, which assumes that very small exposures are harmless, the radiation hormesis model, which says that radiation at very small doses can be beneficial, and the supra-linear model. It has been argued that the LNT model may have created an irrational ...
Radiation hormesis is the conjecture that a low level of ionizing radiation (i.e., near the level of Earth's natural background radiation) helps "immunize" cells against DNA damage from other causes (such as free radicals or larger doses of ionizing radiation), and decreases the risk of cancer. The theory proposes that such low levels activate ...