Lung function in children residents in the largest coal region in Brazil

Area of Science:

• Environmental Health
• Pediatric Pulmonology
• Epidemiology

Background:

• Coal mining releases air pollutants impacting children's lung function.
• Brazil's southern region has significant coal reserves, with associated industrial activity.
• Children's respiratory health is a growing concern in areas with environmental vulnerability.

Purpose of the Study:

• To assess the prevalence of altered respiratory function in children residing in a coal mining region of Brazil.
• To identify factors associated with impaired lung function in this pediatric population.
• To correlate air quality data with respiratory health outcomes.

Main Methods:

• A cross-sectional study involving 396 children across seven cities in a high socio-environmental vulnerability area.
• Data collection included socioeconomic, demographic, prenatal/postnatal, neonatal, and child health information.
• Lung function tests and air quality measurements were conducted.

Main Results:

• A significant prevalence of altered respiratory function was observed (7.78%).
• Associated factors included passive smoking, low birth weight, and a history of wheezing.
• High prevalence of preterm birth, low birth weight, and long-term environmental exposure were noted.
• Air pollutant concentrations were comparable between the coal mining town and surrounding areas.

Conclusions:

• Children in this Brazilian coal mining region exhibit a notable prevalence of altered respiratory function.
• Passive smoking, low birth weight, and wheezing history are key risk factors.
• The findings highlight the need for targeted public health interventions and environmental monitoring.