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Related Experiment Videos

Mortality among chrome leather tannery workers: an update.

Frank B Stern1

  • 1National Institute for Occupational Safety and Health, Columbia Parkway, Cincinnati, Ohio 45226, USA. fbs1@cdc.gov

American Journal of Industrial Medicine
|July 23, 2003
PubMed
Summary

Leather tannery workers showed lower overall cancer mortality. While some specific cancer risks were not significantly elevated, lung cancer showed a slight increase at one facility, warranting further investigation into exposure variations.

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Area of Science:

  • Occupational Health
  • Environmental Epidemiology
  • Toxicology

Background:

  • Workers in leather tanning and finishing face potential exposure to carcinogens.
  • Previous studies suggest occupational exposures in tanneries may pose health risks.

Purpose of the Study:

  • To update a mortality study of chrome tannery workers with extended follow-up.
  • To analyze cause-specific mortality risks associated with long-term employment in tanneries.

Main Methods:

  • Updated mortality data for 9,352 workers from two chrome tanneries, including 11 additional years of follow-up and 1,153 new deaths.
  • Analyzed 92 causes of death using modified life-table analysis.
  • Calculated cause-specific standardized mortality ratios (SMRs) using U.S. and state death rates for comparison.

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Main Results:

  • Combined cohort exhibited lower-than-expected mortality for all causes and all cancers.
  • No specific cancer sites (lung, pancreas, bladder, kidney, etc.) showed significantly elevated mortality in either tannery.
  • An elevated risk for lung cancer was observed at one tannery when using state comparison rates (SMR=130, P<0.01); no duration-based trends were found.

Conclusions:

  • Mortality risks for most cancers were not elevated in this updated cohort of tannery workers.
  • Observed inconsistencies in cancer site excesses across studies may be due to variations in tannery processes and exposures.
  • Further research is needed to understand the impact of specific exposures in different tannery environments.