Impact of air pollution on life expectancy in Asian developing countries: Does renewable energy adoption matter?

Air pollution (AIRP) remains a critical public health and environmental challenge in developing Asia, where rapid industrialization and fossil fuel dependence continue to undermine population health and longevity. This study examines the impact of AIRP on life expectancy (LIFE) and investigates whether renewable energy adoption moderates this relationship. AIRP is proxied by carbon dioxide (CO₂) and nitrous oxide (N₂O) emissions, which capture pollution-intensive energy systems, industrial activity, and agricultural practices that jointly generate health-damaging co-pollutants, particularly in contexts where consistent long-term data on ambient pollutants such as PM₂.₅ are unavailable. Using balanced panel data for 30 developing Asian countries from 2000 to 2023, we apply fixed effects, system GMM, and Lewbel IV-2SLS estimators to address unobserved heterogeneity, endogeneity, and persistence in health outcomes, while accounting for key socioeconomic and healthcare-related confounders. The results indicate that higher CO₂ and N₂O emissions significantly reduce LIFE, with CO₂ exerting a relatively stronger adverse effect. Importantly, greater renewable energy adoption weakens the negative association between emissions and LIFE, suggesting a mitigating role of clean energy transitions. While acknowledging that LIFE is influenced by multiple structural factors beyond AIRP, the findings provide robust evidence that renewable energy expansion can contribute to improved environmental quality and long-term health outcomes. These results highlight the potential co-benefits of clean energy policies for environmental sustainability and public health, offering cautious and policy-relevant insights aligned with SDG 3, SDG 7, and SDG 13.