AW: [ RadSafe ] AW: Gasteiner Heilstollen for holiday!?

[John Jacobus]

Ranier, 
Thank you for the reply.  I am about 500 emails behind
as I was off-line for about a month.  (Actually, the
number of interesting e-mails, such as yours, are
probably less than 50.)

Biological repair is certainly not unique to
radiation. That is why certain toxic chemicals do not
kill at low doses or dose rates.  In our country, the
Environmental Protection Agency has threshold limit
values (TLV).  In radiation protection, we have
exposure limits, which are certainly above background
levels.  

I don't consider the statement that radiation "may
result from the induction of repair enzymes" to be all
that surprising, whether it was made in 1979 or
yesterday.  

--- Rainer.Facius at dlr.de wrote:

> John:
> 
>  
> 
> Taken at face value you might speculate that
> increased (mainly) Radon exposure decreases lung
> cancer incidence (Badgastein vs. Salzburg). Yet the
> rather short paper does not present sufficient facts
> to make that case. However, I reproduce a reference
> which I gave you already recently which many years
> ago found already genotoxic evidence about what an
> underlying mechanism might be.
> 
>  
> 
> "It is suggested that the shape of the dose-response
> curve at these very low levels of radiation [at
> Badgastein] may result from the induction of repair
> enzymes." (already in 1979!)
> 
> Pohl-Rüling J, Fischer P, The dose-effect
> relationship of chromosome aberrations to alpha and
> gamma irradiation in a population subjected to an
> increased burden of natural radioactivity. Radiation
> Research 80(1979)61-81
> 
>  
> 
> BTW, Pohl-Rühling belongs to the luminaries in her
> field.
> 
>  
> 
> Regards, Rainer 
> 
>  
> 
> 
> ________________________________
> 
> Von: John Jacobus [mailto:crispy_bird at yahoo.com]
> Gesendet: Mo 22.08.2005 18:54
> An: Facius, Rainer; jimm at WPI.EDU; rad-sci-l at WPI.EDU;
> radsafe at radlab.nl
> Betreff: Re: [ RadSafe ] AW: Gasteiner Heilstollen
> for holiday!?
> 
> 
> 
> Ranier,
> Would you then conclude that increased annual doses
> of
> radiation do not have a noticable effect on cancer
> rates? 
> 
> --- Rainer.Facius at dlr.de wrote:
> 
> > Jim:
> >
> > 
> >
> > "The percentage of all cancer deaths relative to
> all
> > deaths in
> > Badgastein during the years 1947-2000 was 21%, the
> > same value as in Bad
> > Hofgastein [a nearby control area] despite the
> > annual doses being three
> > times higher. Furthermore, the number of all
> > cancers, especially lung
> > cancer, in Bad Gastein is lower than the expected
> > value for the province
> > of Salzburg, despite the annual doses being four
> > times higher."
> >
> > 
> >
> > Pohl-Ruehling J, Hofmann W,
> >
> > Investigation of cancer mortality in the Gastein
> > Valley, an area of
> > high-level natural radiation.
> >
> > International Congress Series 1236(2002)27-29
> >
> > 
> >
> > Regards, Rainer
> >
> >
> > ________________________________
> >
> > Von: owner-rad-sci-l at WPI.EDU
> > [mailto:owner-rad-sci-l at WPI.EDU] Im Auftrag
> > von Muckerheide, James
> > Gesendet: Montag, 22. August 2005 16:19
> > An: rad-sci-l at WPI.EDU; radsafe at radlab.nl
> > Betreff: Gasteiner Heilstollen for holiday!?
> >
> >
> >
> > Friends,
> >
> > 
> >
> > In the 'Travel' section of the Irish
> Independent...
> > :-)
> >
> > 
> >
> > ...which says nothing about the long-term lung
> > cancer effect!
> >
> > 
> >
> > Regards, Jim Muckerheide
> >
> > ===================
> >
> > 
> >
> > DESTINATIONS : Build up your immunity on holidays
> >
> > Saturday August 20th 2005
> >
> >  . . .
> 
> +++++++++++++++++++
> "Every now and then a man's mind is stretched by a
> new idea and never shrinks back to its original
> proportion." -- Oliver Wendell Holmes, Jr.
> 
> -- John
> John Jacobus, MS
> Certified Health Physicist
> e-mail:  crispy_bird at yahoo.com
> 
> 
>                
> ____________________________________________________
> Start your day with Yahoo! - make it your home page
> http://www.yahoo.com/r/hs
> 
> 
> 
> 
> 


+++++++++++++++++++
"Every now and then a man's mind is stretched by a new idea and never shrinks back to its original proportion." -- Oliver Wendell Holmes, Jr.

-- John
John Jacobus, MS
Certified Health Physicist
e-mail:  crispy_bird at yahoo.com

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