Wood dust is a known human carcinogen

Research studies on wood smoke and other air pollution.

Wood dust is a known human carcinogen

Postby Wilberforce » Sat Oct 04, 2014 11:07 am

Scientific Review of Wood Dust
http://ntp.niehs.nih.gov/pubhealth/roc/ ... index.html
PDF DL
http://ntp.niehs.nih.gov/ntp/newhomeroc ... es_508.pdf

Wood Dust Carcinogenicity

Wood dust is known to be a human carcinogen, based on sufficient evidence of carcinogenicity from studies in humans. It has been demonstrated through human epidemiologic studies that exposure to wood dust increases the occurrence of cancer of the nose (nasal cavities and paranasal sinuses). An association of wood dust exposure and cancers of the nose has been observed in numerous case reports, cohort studies, and case-control studies specifically addressing nasal cancer. Strong and consistent associations with cancer of the nasal cavities and paranasal sinuses were observed both for occupations associated with wood dust exposure and for directly estimated wood dust exposure. Risks were highest for adenocarcinoma, particularly among European populations. Studies of U.S. populations also showed similar significant positive associations. A pooled analysis of 12 case-control studies showed a dose-response pattern, with estimated relative risk for adenocarcinoma reaching 45.5 (95% CI = 28.372.9) in highly exposed males (Demers et al. 1995). The association of wood dust exposure with elevated nasal cancer risk in a large number of independent studies and with many different occupations in many countries argues strongly that the elevation was due to wood dust rather than other concurrent exposure(s) such as formaldehyde or wood preservatives.
• The Surgeon General has determined that there is no safe level of exposure to ambient smoke!

• If you smell even a subtle odor of smoke, you are being exposed to poisonous and carcinogenic chemical compounds!

• Even a brief exposure to smoke raises blood pressure, (no matter what your state of health) and can cause blood clotting, stroke, or heart attack in vulnerable people. Even children experience elevated blood pressure when exposed to smoke!

• Since smoke drastically weakens the lungs' immune system, avoiding smoke is one of the best ways to prevent colds, flu, bronchitis, or risk of an even more serious respiratory illness, such as pneumonia or tuberculosis! Does your child have the flu? Chances are they have been exposed to ambient smoke!
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Wilberforce
 
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exposure to wood dust and risk of lung cancer

Postby Wilberforce » Fri Jan 09, 2015 8:55 pm

http://www.ehjournal.net/content/14/1/1/abstract

Occupational exposure to wood dust and risk of lung cancer in two population-based case-control studies in Montreal, Canada

Eric Vallières, Javier Pintos, Marie-Elise Parent and Jack Siemiatycki

Environmental Health 2015, 14:1 doi:10.1186/1476-069X-14-1
Published: 7 January 2015
Abstract (provisional)
Background

Wood dust is one of the oldest and one of the most common occupational exposures in the world. The present analyses examine the effect of lifetime exposure to wood dust in diverse occupational settings on lung cancer risk.
Methods

We conducted two population-based case-control studies in Montreal: Study I (1979-1986) included 857 cases and two sets of controls (533 population and 1349 cancer controls), and Study II (1996-2001) comprised 736 cases and 894 population controls. Detailed job histories were obtained by interview and each job was evaluated by expert chemist-hygienists to estimate the likelihood and level of exposure to many substances, one of which was wood dust. Odds ratios (ORs) were computed in relation to different indices of exposure to wood dust, adjusting for several covariates including smoking. Three datasets were analysed: Study I with population controls, Study I with cancer controls, and Study II.
Results

The most frequently exposed occupations in our study population were in construction, timber and furniture making industries. We found increased risks of lung cancer for substantial cumulative exposure to wood dust in Study I with cancer controls, (OR = 1.4: 95% confidence interval 1.0;-2.0) and in Study II (OR = 1.7: 95% confidence interval 1.1-2.7). There were no excess risks of lung cancer in any of the three datasets among workers whose cumulative exposure was not substantial. These tendencies held equally within strata of low smokers and heavy smokers.
Conclusion

There was evidence of increased risk of lung cancer among workers with substantial cumulative exposure to wood dust.
• The Surgeon General has determined that there is no safe level of exposure to ambient smoke!

• If you smell even a subtle odor of smoke, you are being exposed to poisonous and carcinogenic chemical compounds!

• Even a brief exposure to smoke raises blood pressure, (no matter what your state of health) and can cause blood clotting, stroke, or heart attack in vulnerable people. Even children experience elevated blood pressure when exposed to smoke!

• Since smoke drastically weakens the lungs' immune system, avoiding smoke is one of the best ways to prevent colds, flu, bronchitis, or risk of an even more serious respiratory illness, such as pneumonia or tuberculosis! Does your child have the flu? Chances are they have been exposed to ambient smoke!
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Wilberforce
 
Posts: 6093
Joined: Wed Jul 25, 2007 11:36 pm
Location: USA


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