One  article i read has the silver reacting with sulpher in the skin,
changing it into a light sensitive compound.
[article was on an EPA site, I  think]
 Ken

At 04:20 PM 12/12/00 -0800, you wrote:
>> BUT DON'T FORGET THE EVILS OF AGYRIA!!!!!!!!  
>> [waving arms & panting!]  --Russ
>
>Even drinking the largest-particle electro-colloidal
>silver I could make (dark purple or brown), I would
>still need to drink more each day than I am able to
>drink, over an very extended period of time, before
>argyria would reach the level of faint possibility.
>
>The discussions of argyria that have occured on this
>list and elsewhere have demonstrated to me that nobody
>even knows what causes argyria.
>
>The two schools of thought seem to be that, 
>
>1. Argyria is caused by ingesting large amounts of a
>silver salt (over an extended period of time), which
>somehow photosynthesizes into silver metal (catalyzed
>by light) which is trapped in the skin pigment.
>
>2. Consuming large amounts of silver or silver salts
>in particularly large particle size (such as
>mechanically ground up silver) for an extended time.
>
>Neither of these eventualities are related to the
>consumption of electro-colloidal silver. Neither the
>amount of silver nor the largest possible particle
>size of electro-colloidal silver is remotely close to
>any known intelligent theory of the cause of argyria
>(excepting inane claims made by the FDA).
>
>The fact remains that, "We could not locate a single
>case of orally consumed colloidal silver manufactured
>in the last 25 years causing Argyria in our review of
>the literature.” Alexander G. Schauss, Ph.D. Director,
>Life Sciences Division John Hopkins University.
>
>Terry Wayne
>
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