Health Effects of Heavy Metal Exposure Among E-waste Workers and Community-dwelling Adults in Thailand: A Cross-sectional Study.

Objectives: Global concern is increasing about the health effects of electronic waste (e-waste). This study examines the health impacts of heavy metal (HM) exposure among e-waste workers (EWWs) and community-dwelling adults (CDAs) in Northeastern Thailand and identifies factors associated with adverse health outcomes.

Methods: A cross-sectional study was conducted of 164 EWWs and 164 CDAs. A survey was employed to collect data on participant characteristics, symptoms, anxiety, depression, and sleep quality. Urine samples were analyzed for lead (Pb) and cadmium (Cd) levels using atomic absorption spectrometry. Multiple logistic regression analysis was used to identify factors impacting health.

Results: Across all participants, urinary Pb and Cd levels ranged from 5.30 to 29.50 µg/g creatinine and from 0.60 to 4.00 µg/g creatinine, respectively. The most frequently reported health issues pertained to musculoskeletal disorders (MSDs) at 38.70%, central nervous system (CNS) issues at 36.60%, and skin disorders at 31.10%. Multivariable analysis indicated that the presence of MSDs was significantly associated with exposure to Pb and Cd. Poor sleep quality (PSQ) was significantly linked to CNS problems, while body mass index was significantly related to skin disorders. Factors including primary education level or below, smoking, cleaning the house more than 3 times weekly, and PSQ were significantly linked to depression. Anxiety was significantly associated with PSQ.

Conclusions: Environmental exposure to Pb and Cd can have adverse health impacts in the form of MSDs. Depression and anxiety are common conditions among CDAs. Public health officials should monitor HM exposure and mental health within the community.