Abstract
OBJECTIVES: We aimed to analyse the disease burden and trends related to household air pollution (HAP) from 1990 to 2021 and to assess the correlation between development status and HAP burden using the Sociodemographic Index (SDI). DESIGN: Observational study using data from the global burden of disease (GBD) 2021. MAIN OUTCOMES AND MEASURES: The GBD results tool provided comprehensive data on disability-adjusted life years (DALYs) attributable to HAP, stratified by age, sex, year, and geographical location. RESULTS: A significant reduction of approximately 50% in global HAP-related DALYs was observed between 1990 and 2021. However, a minor increase in HAP-related DALYs was noted between 2020 and 2021. The highest burden was found in children under five. Males generally had higher DALY rates than females. A negative correlation was identified between SDI and HAP-related DALY rates, with the highest rate in Oceania and the lowest in high-income North America. Maternal and neonatal disorders, cardiovascular diseases, respiratory infections and tuberculosis, and chronic respiratory diseases were the leading causes of HAP-related DALYs. CONCLUSION: The study highlighted the progress in reducing the global burden of HAP-related diseases, yet it also revealed persistent disparities that require targeted public health interventions. Continued efforts to promote cleaner energy solutions and address regional, age and gender-specific vulnerabilities are essential for further reducing the health impact of HAP. Future research should focus on understanding the contributing factors to these disparities and developing innovative mitigation strategies.