Re: Arsenic ingestion from well water associated with increased risk of lung cancer

["jjcohen" <jjcohen@PRODIGY.NET>]

A likely reason that Arsenic, Lead, and certain other toxic materials have

not become designated carcinogens is that testing for carcinogenicity

generally involves administration of relatively large doses to animals so

that any increase in cancer incidence might be more readily discernable. The

problem is that such large doses can kill the animal due to its toxic effect

and early death precludes development cancer at later times. Testing with

sub-lethal doses to observe possible slight increases in cancer incidence

would require too many subject animals, too much time, and would likely

produce equivocal results.









----- Original Message -----

From: <RuthWeiner@AOL.COM>

To: Cary Renquist <cary_rdsfe@pacbell.net>; RadSafe

<radsafe@list.vanderbilt.edu>

Sent: Wednesday, December 22, 2004 11:35 AM

Subject: Re: Arsenic ingestion from well water associated with increased

risk of lung cancer





> I don't care what the source of this statement is, the statement isn't

true.  Ingested arsenic has never been shown to be a carcinogen.

Occupational exposure to inhaled arsenic has shown that inhaled aresenic can

be carcinogenic in high enough concentration.

>

> incidentally, the last issue of Consumers' reports made the same error.

>

> Ruth

>

> --

> Ruth F. Weiner

> ruthweiner@aol.com

> 505-856-5011

> (o)505-284-8406

>

> ************************************************************************

> You are currently subscribed to the Radsafe mailing list. To

> unsubscribe, send an e-mail to Majordomo@list.vanderbilt.edu  Put the

> text "unsubscribe radsafe" (no quote marks) in the body of the e-mail,

> with no subject line. You can view the Radsafe archives at

> http://www.vanderbilt.edu/radsafe/

>



************************************************************************

You are currently subscribed to the Radsafe mailing list. To

unsubscribe, send an e-mail to Majordomo@list.vanderbilt.edu  Put the

text "unsubscribe radsafe" (no quote marks) in the body of the e-mail,

with no subject line. You can view the Radsafe archives at

http://www.vanderbilt.edu/radsafe/