Occupational exposure to pesticides and symptoms of depression in agricultural workers. A systematic review.

•Occupational exposure to pesticides could affect the mental health of farmers.•There are no systematic reviews that address the last 10 years of studies on depressive symptoms in agricultural workers..•Our review updates information on the relationship between pesticide exposure and the development of depression symptoms.•More longitudinal studies are needed to study occupational pesticide exposure and depression with specific biomarkers.