Steve Slatin on wed 21 jul 04
was Re: food safe pottery at low fire temperatues?
Edouard --
A wonderful explication of the cadmium issue. Let me focus on
something you only touched on, (quoted below) --
Some years back there was a study on lung cancer and smoking with
the data sorted by occupation. I can't remember the details, but all
occupations showed higher cancer rates with smoking vs. without.
The differerence between the rate for non-smokers and smokers
was widely different by occupation -- I only remember the two extremes;
farmers who smoked had only a slightly elevated risk of lung cancer;
auto mechanics had a massively higher rate if they smoked.
I chewed that over for a while and decided I could identify two possible
correlations -- one, that there was something about grease stains on
a cigarette that made it much more dangerous, the other, that the auto
mechanic, being indoors and exposed to fumes and so on all day long
with smoking besides crossed over a total exposure trip-wire. AFAIK,
that issue was never further pursued, so who knows? Nonetheless,
as we know, potters are exposed to lots of things -- clay dust from our
studio floors, fungi from our slip buckets, metal oxides and carbonates
from colorants, heavy whiffs of CO from kiln gasses and so on.
Many safety studies presume a healthy person's exposure -- someone
in good shape with no significant other exposures. We all have multiple
exposures. Everything cries out for prudence.
Regards -- Steve Slatin
"Edouard Bastarache Inc." wrote:
Tobacco smoke is a lot more noxious to the lungs (cancer) than
cadmium alone.
Steve Slatin -- Entry-level potter, journeyman loafer, master obfuscator
Sequim, Washington, USA
48.0937°N, 123.1465°W or thereabouts
---------------------------------
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Read only the mail you want - Yahoo! Mail SpamGuard.
Ron Roy on sat 24 jul 04
was Re: food safe pottery at low fire temperatues?
Just a few additions to what Steve has added on Cadmium.
Cancer is always mentioned when discussing Cadmium. It also has adverse
male and female reproductive effects.
Any discussion should include the reproductive aspect - especially
regarding women who are still capeable of bearing children - and expectant
mothers of course - as well of any males who might father children.
RR
>A wonderful explication of the cadmium issue. Let me focus on
>something you only touched on, (quoted below) --
>
>Some years back there was a study on lung cancer and smoking with
>the data sorted by occupation. I can't remember the details, but all
>occupations showed higher cancer rates with smoking vs. without.
>
>The differerence between the rate for non-smokers and smokers
>was widely different by occupation -- I only remember the two extremes;
>farmers who smoked had only a slightly elevated risk of lung cancer;
>auto mechanics had a massively higher rate if they smoked.
>
>I chewed that over for a while and decided I could identify two possible
>correlations -- one, that there was something about grease stains on
>a cigarette that made it much more dangerous, the other, that the auto
>mechanic, being indoors and exposed to fumes and so on all day long
>with smoking besides crossed over a total exposure trip-wire. AFAIK,
>that issue was never further pursued, so who knows? Nonetheless,
>as we know, potters are exposed to lots of things -- clay dust from our
>studio floors, fungi from our slip buckets, metal oxides and carbonates
>from colorants, heavy whiffs of CO from kiln gasses and so on.
>
>Many safety studies presume a healthy person's exposure -- someone
>in good shape with no significant other exposures. We all have multiple
>exposures. Everything cries out for prudence.
>
>Regards -- Steve Slatin
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
Edouard Bastarache Inc. on sat 24 jul 04
Cadmium was incriminated as a possible etiologic agent of the low
birth weight observed in children of professionally exposed mothers
or indirectly by food and/or the use of cigarettes.
Occurrence of hypertension in mothers during pregnancy was
also associated with high cadmium concentrations in the hair of
new-born babies. So far no study makes it possible to confirm
a harmful effect of cadmium on development.
Higher cadmium concentrations were observed in the seminal
fluid of smokers compared to non-smokers. However, no
association could be shown between exposure to the metal and
noxious effects on the reproductive system
(Encyclopédie Médico-Chirurgicale, Toxicologie, Pathologie Professionnelle
by Prof. Alfred Bernard of l'Université Catholique de Louvain and
Dr.Violaine
Verougstraete )
Also, Prof. Bernard told us last summer that he has yet to
see a case of lung cancer due to cadmium exposure.
As for bone effects due to cadmium exposure he told us it
takes dramatically high levels. These lesions were described
decades ago in 1942 by Nicaud P, Lafitte A, Gros A,
"Symptoms of chronic cadmium intoxication" in Arch Mal
Prof Med Trav Secur Soc.
Later,
"Ils sont fous ces quebecois"
Edouard Bastarache
Irreductible Quebecois
Indomitable Quebeker
Sorel-Tracy
Quebec
edouardb@sorel-tracy.qc.ca
http://sorel-tracy.qc.ca/~edouardb/
http://perso.wanadoo.fr/smart2000/index.htm
http://www.digitalfire.com/education/toxicity/
----- Original Message -----
From: "Ron Roy"
To:
Sent: Saturday, July 24, 2004 1:33 AM
Subject: Re: Occupational health & exposure, was Re: food safe pottery at
low fire temperatues?
> Just a few additions to what Steve has added on Cadmium.
>
> Cancer is always mentioned when discussing Cadmium. It also has adverse
> male and female reproductive effects.
>
> Any discussion should include the reproductive aspect - especially
> regarding women who are still capeable of bearing children - and expectant
> mothers of course - as well of any males who might father children.
>
> RR
>
>
> >A wonderful explication of the cadmium issue. Let me focus on
> >something you only touched on, (quoted below) --
> >
> >Some years back there was a study on lung cancer and smoking with
> >the data sorted by occupation. I can't remember the details, but all
> >occupations showed higher cancer rates with smoking vs. without.
> >
> >The differerence between the rate for non-smokers and smokers
> >was widely different by occupation -- I only remember the two extremes;
> >farmers who smoked had only a slightly elevated risk of lung cancer;
> >auto mechanics had a massively higher rate if they smoked.
> >
> >I chewed that over for a while and decided I could identify two possible
> >correlations -- one, that there was something about grease stains on
> >a cigarette that made it much more dangerous, the other, that the auto
> >mechanic, being indoors and exposed to fumes and so on all day long
> >with smoking besides crossed over a total exposure trip-wire. AFAIK,
> >that issue was never further pursued, so who knows? Nonetheless,
> >as we know, potters are exposed to lots of things -- clay dust from our
> >studio floors, fungi from our slip buckets, metal oxides and carbonates
> >from colorants, heavy whiffs of CO from kiln gasses and so on.
> >
> >Many safety studies presume a healthy person's exposure -- someone
> >in good shape with no significant other exposures. We all have multiple
> >exposures. Everything cries out for prudence.
> >
> >Regards -- Steve Slatin
>
> Ron Roy
> RR#4
> 15084 Little Lake Road
> Brighton, Ontario
> Canada
> K0K 1H0
> Phone: 613-475-9544
> Fax: 613-475-3513
>
>
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