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Lung and stomach cancer risk in coal miners

5/14/2014

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Author: Dr. Ayguen Sahin | CRS      Yazar: Dr. Ayguen Sahin | CRS 
First, as the Cancer Research Simplified (CRS) Family, we are deeply saddened by the loss of over 245 coalminers killed in the explosion and fire of the coalmine in the Western Turkish town of Soma yesterday, May 13th, 2014. Our article below is dedicated to our Turkish followers and to all coalmine workers in the world.  This article represents our research into the potential link between coal mining and cancer. 
Oncelikle, Cancer Research Simplified (CRS) ailesi olarak, Soma'daki maden ocaginda dunku patlama ve yangin sonucu hayatini kaybeden en az 245 olu ve bircok yarali icin derin uzuntumuzu dile getirmek istiyoruz. Asagidaki makalemizi, yuksek sayidaki Turk izleyicilerimize ve uyelerimize, ayrica tum dunyadaki komur madeni iscilerine armagan ediyoruz. Komur madenciligin kanser riski tasiyip tasimadigini arastirdik.  
Lung and stomach cancer risk in coal miners - Cancer Research Simplified
Coal miners may develop a number of lung diseases and disorders due to their exposure to coalmine dust, such as pneumoconiosis, chronic bronchitis and obstructive lung disease. The occurrence and severity of the disease depends on the intensity and duration of the dust exposure. The specific composition of the coalmine dust also has a bearing on some health outcomes (1).    

The presumption of a possibly elevated cancer risk in coalminers is based mainly on two hypotheses: 1) Exposure to pure quartz dust/crystalline silica dust, and 2) Ingested coalmine dust interacting with the acidic environment in the stomach, potentially causing an elevated gastric cancer (stomach cancer) risk. (2)     
Most coalmine dusts include a high percentage of quartz. (2) Crystalline silica dust has been determined to be a Group I carcinogen by the International Agency for Research on Cancer. (3) The exposure to airborne quartz particles was associated with a small but statistically significant risk for lung cancer mortality. (4) Although research in the 1950s did not strongly support a relationship between coal mine dust exposure and lung cancer in particular, newer studies have more definitively linked coalmine dust exposure and cancer. A German study from 1997 demonstrated a small, but statistically significant risk for gastric (stomach) cancer among coalminers. (2) In 2008, a Czech study found significantly higher lung cancer risk in workers with pneumoconiosis who were working in a mine comparing with general Czech population. (5) In 2010, 4 new cases of cancer were  found among former mine workers in Minnesota, USA, increasing the number of mine-related cancer cases to 63. (6)    

Overall, the reports are at times contradictory, making a definitive conclusion about cancer risk due to coal mining a challenge. However, small, but statistically significant studies support Hill’s criteria for causation. The lack of strong data regarding people’s exposure and risk, and the wide use of coal mining to enable the production of energy make further studies of population and risk a requisite. 

Glossary: 

Pneumoconiosis: A.K.A. Coal Workers' Pneumoconiosis or Black Lung Disease, is a lung disease caused by inhaling coal dust, especially in mines, over a long period of time.

References:
  1. Coal Worker's Lung Diseases, ILO, 2011
coal_workers_lung_diseases-ilo-2011.pdf
File Size: 126 kb
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   2. Overall Mortality and Cancer Mortality of Coal Miners - Ann. Occup. Hyg, 1997
overall_mortality_and_cancer_mortality_of_coal_miners-ann_occup_hyg_1997.pdf
File Size: 1119 kb
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   3.  Coal Mine Dust Exposure Report - NIOSH, 2011 
coal_mine_dust_exposure_report_niosh_2011_.pdf
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   4. Cause- specific mortality in British coal workers and exposure to respirable dust and quartz. Occup 
        Environ Med 67:270–276, 2010.
   5. Lung Cancer Risk in Black-coal Miners with Pneumoconiosis in the Czech Republic, Epidemiology, 2008
lung_cancer_risk_in_black-coal_miners_with_pneumoconiosis_in...__epidemiology.pdf
File Size: 124 kb
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   6. 4 new cases of cancer found among former mine workers
4_new_cases_of_cancer_found_among_former_mine_workers__minnesota_public_radio_news.pdf
File Size: 69 kb
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#coal #coalminers #coalminershealthrisk #lungcancercoalminers #stomachcancercoalminers #gastriccancercoalminers #Soma #Turkey #Somaturkey #lungcancerriskincoalminers #stomachcancerriskincoalminers #cancer #lungcancer #stomachcancer #gastriccancer #cancersimplified
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