Population-based study of amyotrophic lateral sclerosis and occupational lead exposure in Denmark

Aisha Dickerson, Johnni Hansen, Aaron J. Specht, Ole Gredal, Marc G. Weisskopf

Research output: Contribution to journalArticle

Abstract

Objectives Previous research has indicated links between lead (Pb) exposure and increased risk of neurodegenerative disorders, including amyotrophic lateral sclerosis (ALS). In this study, we evaluated the association between occupational Pb exposures and ALS. Methods ALS cases were ascertained through the Danish National Patient Registry from 1982 to 2013 and age and sex-matched to 100 controls. Using complete employment history since 1964 from the Danish Pension Fund, cumulative Pb exposure was estimated for each subject via a Danish job exposure matrix. Associations were evaluated using conditional logistic regression analyses and stratified by sex. Results For men with >50% probability of exposure, there was an increase in odds of ALS for exposures in the 60th percentile or higher during any time 5 years prior to diagnosis (aOR: 1.35; 95% CI 1.04 to 1.76) and 10 years prior to diagnosis (aOR: 1.33; 95% CI 1.03 to 1.72). No significant associations were observed in women, and there were no linear trends seen for Pb exposures for either sex. Conclusions Our study indicates an association between consistently higher occupational Pb exposures and ALS. These findings support those of previously reported associations between ALS and specific occupations that commonly experience Pb exposure.

Original languageEnglish (US)
Pages (from-to)208-214
Number of pages7
JournalOccupational and Environmental Medicine
Volume76
Issue number4
DOIs
StatePublished - Apr 1 2019
Externally publishedYes

Fingerprint

Amyotrophic Lateral Sclerosis
Denmark
Occupational Exposure
Population
Pensions
Occupations
Neurodegenerative Diseases
Registries
Lead
Logistic Models
Regression Analysis
Research

Keywords

  • amyotrophic lateral sclerosis
  • lead
  • motor neurone disease

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health

Cite this

Population-based study of amyotrophic lateral sclerosis and occupational lead exposure in Denmark. / Dickerson, Aisha; Hansen, Johnni; Specht, Aaron J.; Gredal, Ole; Weisskopf, Marc G.

In: Occupational and Environmental Medicine, Vol. 76, No. 4, 01.04.2019, p. 208-214.

Research output: Contribution to journalArticle

Dickerson, Aisha ; Hansen, Johnni ; Specht, Aaron J. ; Gredal, Ole ; Weisskopf, Marc G. / Population-based study of amyotrophic lateral sclerosis and occupational lead exposure in Denmark. In: Occupational and Environmental Medicine. 2019 ; Vol. 76, No. 4. pp. 208-214.
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