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The Linear No-Threshold Model
These bodies conclude that, until further studies clarify the risk of cancer induction at low doses, it is prudent and conservative to use the linear no-threshold (LNT) model to estimate cancer risks.
Based on the known risk of cancer induction at high doses, the LNT model linearly extrapolates risks at low doses and assumes there is no threshold for cancer induction. Because we cannot prove there is no risk at very low doses, we conservatively assume that any amount of radiation, no matter how small, poses a cancer risk.
Howard Hughes Medical Institute researchers have identified a group of genes that influence a person’s sensitivity to radiation. The findings are a step toward a long-term goal of developing new tests that would help physicians determine the optimal dosage of radiation for cancer treatment based on a person’s genetic profile.
“This study identifies a set of genetic variants that influence how a cell responds to radiation-induced damage,” said Vivian G. Cheung, senior author of a report published on April 6, 2009, in the journal Nature.
Originally posted by Sarahko
reply to post by meathed
So HOW can they get away with this?? If they really are lying, why aren`t other countries coming in and helping out to show how big the lie is?
Originally posted by FreeSpeaker
Originally posted by Sarahko
reply to post by meathed
So HOW can they get away with this?? If they really are lying, why aren`t other countries coming in and helping out to show how big the lie is?
Basically they get away with it because there is no way to determine if a cancer was caused naturally or un-naturally. The fact is we know that radiation causes cancer but we have not developed a method to distinguish the cause and when you add in the fact that some cancers don't develope for years after exposure it gets much more complicated.
As for why don't other countries don't say something, probably because they have nuc plants of their own and would never admit to their people the true dangers. Find one nuclear plant that does not have higher instances of cancer and birth defects in its surrounding population and I will eat my hat.
Originally posted by Sarahko
reply to post by meathed
Q. So HOW can they get away with this??
A. I dont know, but this is what governments do and will continue to do, they lie to the people.
Q. If they really are lying, why aren`t other countries coming in and helping out to show how big the lie is?
A. Because we dont care. Its one less mouth to feed in the future. Its one less person buying the petrol that you want. I could go on.
Q.]Or maybe they know that the radiation that has spilled out so far is so big, that everyone will die in a very short span and that they cannot afford telling everyone to leave because of the mass panic and because, anyway, we have all been contaminated already??
A.Lots of people will die but it will take years for cancers to form. And by then legally anyone whom gets cancer from this wont be able to sue, as there will be no proof.
[emphasis added]
The large scale epidemiological surveys of the CTSG involving 36,050 patients in the United States and the Swedish cohort studies have provided considerable information about the relative cancer risks after iodine-131 therapy. After treatment of Graves’ disease in adults with iodine-131, which exposes the thyroid gland to high levels of radiation, rates of thyroid cancer and thyroid cancer mortality were not increased.
Follow-up data involving children in the CTSG showed that thyroid adenomas developed in 30% of the patients treated in one center with low doses of iodine-131 (50 mCi/g) estimated to result in thyroid exposure of 2500 cGy (56, 88). Yet, in the other centers where children were treated with higher doses of iodine-131 (100–200 mCi/g), the incidence of thyroid neoplasms was not increased.
Originally posted by abecedarian
What type of ionizing radiation are you referring to?
Originally posted by abecedarian
It's even been shown that iodine-131, though radioactive and carcinogenic in low to moderate doses, is not carcenogenic in high doses since it kills nearby tissues before they can mutate.
Originally posted by FreeSpeaker
Originally posted by abecedarian
What type of ionizing radiation are you referring to?
Cesium 137 and iodine 131.
Originally posted by abecedarian
It's even been shown that iodine-131, though radioactive and carcinogenic in low to moderate doses, is not carcenogenic in high doses since it kills nearby tissues before they can mutate.
Don't forget the half life Iodine 131 is 8 days. If a area was heavily contaminated with it the levels would naturally fall and anyone living in that area would recieve a different dose every day.
Originally posted by Sarahko
So, if these radiations are really `high` and the governments know, but not letting us know...it means they are just watching and letting the whole Japanese population die... Could this be??
Originally posted by abecedarian
Those are radioactive elements, not ionizing radiation.
Please clarify.
Originally posted by FreeSpeaker
Originally posted by abecedarian
Those are radioactive elements, not ionizing radiation.
Please clarify.
Sorry, should have just said any radiation from nuclear fission or fusion. But you know what I meant.edit on 3-4-2011 by FreeSpeaker because: (no reason given)edit on 3-4-2011 by FreeSpeaker because: (no reason given)
Originally posted by abecedarian
Originally posted by FreeSpeaker
Originally posted by abecedarian
Those are radioactive elements, not ionizing radiation.
Please clarify.
Sorry, should have just said any radiation from nuclear fission or fusion. But you know what I meant.edit on 3-4-2011 by FreeSpeaker because: (no reason given)edit on 3-4-2011 by FreeSpeaker because: (no reason given)
Well, no I don't as fission and fusion both can result in alpha, beta, gamma, neutron and some x-ray radiation all of which behave differently and have differing effects on the body.
edit on 4/3/2011 by abecedarian because: (no reason given)
Originally posted by FreeSpeaker
Originally posted by abecedarian
Originally posted by FreeSpeaker
Originally posted by abecedarian
Those are radioactive elements, not ionizing radiation.
Please clarify.
Sorry, should have just said any radiation from nuclear fission or fusion. But you know what I meant.edit on 3-4-2011 by FreeSpeaker because: (no reason given)edit on 3-4-2011 by FreeSpeaker because: (no reason given)
Well, no I don't as fission and fusion both can result in alpha, beta, gamma, neutron and some x-ray radiation all of which behave differently and have differing effects on the body.
edit on 4/3/2011 by abecedarian because: (no reason given)
Without actually data from Japan its impossible to be so specific as to the types of radionuclides floating around.
Including artificially produced nuclides, more than 3300 nuclides are known (including ~3000 radionuclides), including many more (> ~2400) that have decay half lives shorter than 60 minutes.
Originally posted by abecedarian
So you're saying there's nothing conclusive other than "something" is floating around...
... but we should be scared sh*tless because "something" is floating around...?
Nuclear reactors produce large quantities of ionizing radiation as a byproduct of fission during operation. In addition, they produce highly radioactive nuclear waste, which will emit ionizing radiation for thousands of years for some of the fission products. The safe disposal of this waste in a way that protects future generations from exposure to its radiation is currently imperfect, a highly controversial and arguably unsolved worldwide problem of this technology.
Radiation emissions from nuclear waste decrease extremely slowly. Waste from nuclear reactors is highly radioactive and has to be contained and stored safely for hundreds of thousands of years while this process occurs. While some sources indicate that radioactive emissions from nuclear power plants under normal conditions of operation are lower than radioactive emissions from coal-burning power producers,[7], dangerous amounts of radioactivity have been released during different nuclear accidents. Radioactive waste does not contain the same toxic substances found in the waste byproducts from fossil-fueled generators, but plutonium, which is produced in nuclear reactors, is also a powerful chemical poison.