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Related Experiment Videos

Cardiovascular mortality among pulp mill workers.

P Jäppinen1, S Tola

  • 1Occupational Health Centre, Enso-Gutzeit Oy, Imatra, Finland.

British Journal of Industrial Medicine
|April 1, 1990
PubMed
Summary

Finnish mill workers exposed to sulfur dioxide showed increased cardiovascular deaths, particularly coronary heart disease. Workers exposed to hydrogen sulfide and organic sulfides also experienced elevated cardiovascular and coronary deaths, suggesting a link to these specific exposures.

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Area of Science:

  • Occupational Health
  • Environmental Epidemiology
  • Cardiovascular Epidemiology

Background:

  • Previous studies suggest potential links between occupational exposures and cardiovascular health.
  • Sulphite and sulphate mill environments involve exposure to various chemicals, including sulfur dioxide, hydrogen sulfide, and organic sulfides.

Purpose of the Study:

  • To investigate cardiovascular mortality among Finnish workers exposed to sulfur dioxide.
  • To examine cardiovascular mortality in workers exposed to hydrogen sulfide and organic sulfides.
  • To determine if specific chemical exposures in mill settings are associated with increased cardiovascular disease risk.

Main Methods:

  • A mortality study design was employed, focusing on cardiovascular deaths.
  • The study cohort included Finnish sulphite and sulphate mill workers with continuous employment between 1945 and 1961.

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  • Mortality data were followed up until December 31, 1981, with national death rates used for comparison.

    • Main Results:

    • Workers exposed to sulfur dioxide exhibited an excess of cardiovascular deaths (SMR 123), primarily due to coronary deaths (SMR 145).
    • No significant association was found between the duration of exposure or follow-up period and cardiovascular mortality in the sulfur dioxide cohort.
    • Workers exposed to hydrogen sulfide and organic sulfides showed a significant excess of cardiovascular deaths (SMR 150), driven by coronary deaths (SMR 150), with excesses increasing over longer follow-up periods.

    Conclusions:

    • Exposure to sulfur dioxide in sulphite mills is associated with increased cardiovascular and coronary heart disease mortality.
    • Exposure to hydrogen sulfide and organic sulfides in sulphate mills is linked to elevated cardiovascular and coronary heart disease mortality.
    • The findings suggest that hydrogen sulfide and organic sulfides may be risk factors for coronary heart disease, independent of common risk factors.