Cohort profile: Bangladesh Cook Stove Pregnancy Cohort Study (CSPCS)

Area of Science:

• Environmental Health
• Public Health
• Pediatrics

Background:

• Biomass fuel combustion is a primary source of household air pollution (HAP) in low-resource settings.
• Exposure to fine particulate matter (PM2.5) from HAP is a significant global health concern, particularly for vulnerable populations.
• Understanding the impact of HAP on maternal and infant health is crucial for developing targeted interventions.

Purpose of the Study:

• To assess the effects of biomass fuel use on household air pollution (HAP).
• To determine the impact of HAP, specifically fine particulate matter (PM2.5), on birth outcomes and infant acute lower respiratory infection (ALRI).
• To investigate the development of respiratory and gut microbiota in infants exposed to HAP.

Main Methods:

• Recruited 903 pregnant women in Bangladesh, following 831 mother-infant pairs for 12 months post-delivery.
• Collected data via questionnaires on sociodemographic, medical, nutritional, and behavioral factors.
• Measured household PM2.5 concentrations and analyzed respiratory and gut microbiota in a subset of infants.

Main Results:

• Previous findings indicated detrimental effects of biomass fuel and health inequity on birth outcomes.
• Current analysis shows high household PM2.5 levels associated with cooking fuel type and increased infant ALRI.
• Distinct gut and respiratory microbial communities were identified in infants at 6 months of age.

Conclusions:

• The Cook Stove Pregnancy Cohort Study (CSPCS) offers a cost-effective framework for studying environmental exposures in low-resource countries.
• High indoor PM2.5 levels are linked to infant respiratory infections and altered microbial development.
• Future research will explore the long-term effects of PM2.5 and in utero metal exposure on infant growth, neurodevelopment, and respiratory health.