Re: Natural vs. Man-made

["ruth_weiner" <ruth_weiner@email.msn.com>]

Thank you Jay.  We have had this discussion before on RADSAFE (several
times, in fact), but Norm &Co. remain (or choose to remain) "unconvinced."
What would change their minds?  Beats me!

By the way, Norm, it's "radionuclides," not "radionucleides."  There is a
big difference.

Ruth Weiner
ruth_weiner@msn.com
-----Original Message-----
From: MacLellan, Jay A <jay.a.maclellan@pnl.gov>
To: Multiple recipients of list <radsafe@romulus.ehs.uiuc.edu>
Date: Friday, August 11, 2000 10:49 AM
Subject: Natural vs. Man-made


>Norm's contention:
>
>"Part of the TFP's theory is that man-made radiation, like I-131 and
>Sr-90, go to specific parts of the body, the thyroid and teeth/bones in
these
>cases. There they continue to emit radiation and harm the immune system.
Thus
>these radionucleides (sic) are 'different' than natural radiation which
just
>passes through the body once."
>
>Norm, it isn't just that we don't agree with this, there is no scientific
basis
>for it.  All elements behave the way they do because of their chemistry.
>Uranium is ubiquitous in the environment (you can interpret that as
natural).
>If you ingest some (and you do every day), about 20% is absorbed, and the
rest
>passes through the body.  Of the absorbed fraction about 25% is
preferentially
>taken up by bone, 25% by the kidneys, and 25% by other soft tissue.  The
>remainder stays in the circulation and is excreted.  The absorbed fractions
are
>also removed from the body with set biological half-lives, and excreted.
If you
>ingest plutonium similar things happen, only the absorbed fraction is 0.01%
>instead of 20%, and the distribution in the given organs is different.  The
>other 99.99% just passes through the body once.  If the basis for the TFP
is as
>you state, those responsible for the research are either ignorant or
dishonest.
>END OF STORY.  But of course, that is just my personal opinion.
>
>
>Jay A. MacLellan, CHP
>Radiation and Health Technology
>Pacific Northwest National Laboratory
>Phone:  509-376-7247
>Fax:      509-376-2906
>Email:   jay.a.maclellan@pnl.gov
>
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