ぼやかせていただいております。

Is Radiation As Bad As We Thought?

2016年04月29日 10時04分58秒 | Weblog


via mozu




Hundreds of patients in the spa resort of Bad Steven, in Upper Franconia, allowed themselves to be thoroughly examined for the study. The researchers found that after a series of radon baths, the blood of the test subjects had fewer signs of inflammation. Their immune defense, which is often in overdrive due to their illnesses, also seemed to have calmed down.


Statistically, though, the effect of radiation only becomes apparent at a relatively high dosage -- at about 100 millisieverts, as the unit biologists use to measure the effects of radiation on the body is called. That is 50 times as much as a person receives each year in Germany from natural background radiation.

Starting from 100 millisievert, the danger becomes fairly easy to predict: If 100 people are irradiated with that dosage, a heightened risk of cancer or leukemia is to be expected. But below that things get tricky. "We simply don't know how the body responds to weaker radiation," says Werner Rühm, director of the Institute of Radiation Protection near Munich.



An increase in thyroid cancer has also been observed in the area surrounding Fukushima's destroyed nuclear reactor. Last year around 300,000 people who were 18 or younger at the time of the disaster were examined. Researchers found 137 cases. Yet no one knows how many of these tumors were detected because this was the first time a thorough screening had been undertaken.



The radioactivity in the region of Fukushima remained relatively low. According to the World Health Organization (WHO), no more than 50 millisieverts were to be expected in the first year, even in the worst hit localities, and up to 10 millisieverts in the other surrounding areas.
So was the complete evacuation a mistake? Should people have simply been left at home? Or perhaps only infants, who are especially vulnerable, should have been evacuated?

These questions are easy to ask in hindsight. But for one querulous group of researchers, there are no doubts. They believe that weak radiation doesn't hurt the body, but in fact helps. They say the minor radioactive bombardment can be beneficial: Cells power up their repair systems and enter a state of increased vigilance and vitality.




It is true that many things are good for the body in moderation. Salt for example, or the stimulant caffeine -- substances that are deadly in higher doses.



100mSvを超えると、ガンになる確率が1%増加。

それ以下では不明。

福島では、もっともひどい地域で50mSV以下

結論めいた事は言えないが、低線量は健康にいい、という科学者たちもいるーーラドン温泉効果

塩でも大量にとると体に悪いが、少量だと体にいいのと同じ。


ーーー福島で暮らすと健康にいいかもしれない。
 福島に移住しようかな。






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