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Association between occupational solvent exposure and cognitive performance in the French CONSTANCES study.

Noémie Letellier¹, Guillaume Choron^2,3, Fanny Artaud⁴

¹Neuropsychiat Epidemiol & Clin Res, Univ Montpellier, INSERM, Montpellier, France noemie.letellier@inserm.fr.

Occupational and Environmental Medicine

|February 21, 2020

Summary

Occupational solvent exposure negatively impacts cognitive function in both men and women. This study highlights risks associated with common solvents, even after accounting for workplace conditions.

Keywords:

cognition occupational exposure solvent women working conditions

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Area of Science:

Environmental Health
Neuroscience
Occupational Medicine

Background:

Occupational exposure to solvents is a potential risk factor for cognitive decline.
Understanding the impact of workplace chemical exposure on cognitive performance is crucial for public health.

Purpose of the Study:

To investigate the association between occupational solvent exposure and cognitive performance in middle-aged and early-aging adults.
To consider the influence of working environment characteristics on this relationship.

Main Methods:

Utilized data from the French CONSTANCES cohort (41,854 participants aged 45-69).
Assessed lifetime occupational solvent exposure via questionnaire (gasoline, trichloroethylene, white spirit, cellulosic thinner).
Analyzed cognitive performance using a neuropsychological battery, employing multiple linear and modified Poisson regression, adjusting for confounders and working conditions.

Main Results:

Men exposed to gasoline, white spirit, or cellulosic thinner showed increased risk of global cognitive impairment.
Women exposed to white spirit or with over 20 years of solvent exposure exhibited poorer global cognitive performance.
Findings were adjusted for individual, environmental, and working condition confounders.

Conclusions:

Occupational solvent exposure detrimentally affects cognitive health in both men and women.
This study provides novel insights into solvent-related cognitive risks in a large, general population sample.
The findings underscore the importance of considering working conditions in assessing cognitive health impacts of solvent exposure.