search  current discussion  categories  teaching 

new study finds no association between welding and parkinson's

updated sat 21 may 05


Edouard Bastarache Inc. on mon 16 may 05



thanks for the information.

This is in line with my medical experience of surveying 1,000
welders for 13 years at a local shipyard (1971 to 1983).


"Ils sont fous ces quebecois"
"They are insane these quebekers"
"Estn locos estos quebequeses"
Edouard Bastarache
Irreductible Quebecois
Indomitable Quebeker

Lee Love on tue 17 may 05



The same day I heard the piece about the positive health qualities of
the traditional copper water containers in India, I also listed to
"Zorba Paster On Your Health." Someone called in asking what kind of
cookware is the best to use, she was afraid of aluminum because of the
proported link to alzheymers. Zorba explained that further studies have
been done on aluminum and have found no connection to alzheymers. That's
good to know.

Zorba recommended iron pans because they release dietary levels of iron
into the food.

李 Lee Love 大
愛      鱗
in Mashiko, Japan Visual Bookmarks Zen and Craft

Ron Roy on fri 20 may 05


I sent this to Monona and aked for her opinion - she said to look in the
last paragraph - who paid for the study.

The welders do not want the TLV's lowered.

There are many studies establishing a link between manganese exposure and
Parkinson's and neurological problems.

This a direct quote from Monona

"When ACGIH sets a TLV, they look at ALL the studies. They pick out the best
and write a rationale for their TLV for all to see and criticize. In the case
of manganese, the TLV is set for prevention of Central Nervous system effects
(manganism), lung and reproductive hazards. Don't let one study financed by
the industry cloud the whole picture."


>Just received this information and thought I'd pass it along.
>Sent: Saturday, May 14, 2005 9:09 AM
>Subject: Fwd: New Study Finds No Association Between Welding and
>Parkinson's Disease; ...
>Forwarded Message [ Save to Yahoo! Briefcase | Download File ]
>Date:Sat, 14 May 2005 03:52:34 -0500From:"John Cottingham"
>Study Finds No Association Between Welding and Parkinson's Disease; First
>Epi-Cohort Study to Focus on Welders Confirms Welders Not at Increased
>Risk of Neurodegenerative DisordersTo:PARKINSN@LISTSERV.UTORONTO.CA
>Plain Text Attachment [ Download File | Save to Yahoo! Briefcase ]
>The source of this article is Business Wire:
>12, 2005 02:58 PM US Eastern TimezoneNew Study Finds No Association
>Between Welding and Parkinson's Disease;First Epi-Cohort Study to Focus on
>Welders Confirms Welders Not atIncreased Risk of Neurodegenerative
>DisordersWASHINGTON--(BUSINESS WIRE)--May 12, 2005--The Welding
>Information Centerannounced today that an important new epidemiological
>study published inthe May 2005 issue of the Journal of Occupational and
>EnvironmentalMedicine concludes that there is no link between welding or
>exposure towelding fumes and an increased risk of Parkinson's disease or
>any othersimilar neurodegenerative disorder. Entitled "A Cohort Study of
>Parkinson'sDisease and Other Neurodegenerative Disorders in Danish
>Welders," it is thefirst epidemiological cohort study of Parkinson's
>disease and otherneurodegenerative disorders undertaken among men employed
>as welders.Dr. Mark Roberts, Fellow and Board Member of the American
> ofOccupational and Environmental Medicine, stated, "This is an
>excellentstudy that provides important information about the health of
>welders. Itis the largest cohort study to date to look at the issue of
>welding andParkinson's disease and other parkinsonisms. It has a
>well-defined studypopulation, excellent long-term follow-up and is the
>only cohort study tolook at the rate of incidence of Parkinson's disease
>in this context. Theresults of this study show that welders in this large
>population are not atan increased risk of developing Parkinson's disease
>or other similarmovement disorders."The cohort of 27,839 males identified
>as working in metals manufacturing,were drawn from all Danish males with
>hospitalization and out-patientrecords from the period 1977 through 2002.
>9,817 of these men worked indepartments where welding occurred, and 6,163
>of those in such departmentswere classified as actual welders. The
>standardized disease-specifichospitalization ratio (SHR) incidence of
> Parkinson's disease in these threegroups was then compared to the SHRs
>for the same diseases in the generalpopulation. The resulting SHRs for
>Parkinson's disease were .9 for allworkers in metals manufacturing, 1.0
>for those in welding departments, and.9 for welders themselves. An SHR
>below 1.0 indicates the studied cohortwas less likely to contract the
>disease than the general public, an SHR of1.0 means the risk is the same
>as the general public, and an SHR above 1.0suggests an increased risk for
>the studied group. Similar non-associationSHRs were computed for the other
>neurodegenerative diseases.The study concluded "this cohort of Danish
>welders with more than 20 yearsof systematic follow-up had rates of PD and
>other neurological conditionsconsistent with those of the general
>population of Denmark," and notes itsclinical significance by saying,
>"this relatively large cohort study offersassurances that men in mild and
>stainless steel welding do not haveincreased hospitalizations for
> PD or other neurodegenerative disorders."The lead author of the study was
>epidemiologist Dr. Jon Fryzek of theInternational Epidemiological
>Institute, in Rockville MD. A grant fundingthis research was provided by a
>group of current and former manufacturersof welding consumables.About The
>Welding Information CenterThe Welding Information Center is sponsored by
>current and formermanufacturers and distributors of welding rods. The
>purpose of the site isto educate the public about the importance of
>welding to our society. Bygathering and providing access in one place to
>notable publications,articles and other materials which detail everything
>from welding'sremarkable history and numerous contributions to our
>economy, to currentwelding rod litigation and other issues, the site
>offers visitors a broadoverview of the key facts that form a basis for
>understanding welding andits important role in all our lives. For
>additional information visit
>Send postings to
>You may look at the archives for the list or change your subscription
>settings from
>Moderator of the list is Mel Jacobson who may be reached at

Ron Roy
15084 Little Lake Road
Brighton, Ontario
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513