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Open fire exposure increases the risk of pregnancy loss in South Asia

Author

Listed:
  • Tao Xue

    (Peking University Health Science Centre)

  • Guannan Geng

    (Tsinghua University)

  • Yiqun Han

    (Imperial College London)

  • Huiyu Wang

    (Peking University Health Science Centre)

  • Jiajianghui Li

    (Peking University Health Science Centre)

  • Hong-tian Li

    (Peking University Health Science Centre)

  • Yubo Zhou

    (Peking University Health Science Centre)

  • Tong Zhu

    (Peking University Beijing)

Abstract

Interactions between climate change and anthropogenic activities result in increasing numbers of open fires, which have been shown to harm maternal health. However, few studies have examined the association between open fire and pregnancy loss. We conduct a self-comparison case-control study including 24,876 mothers from South Asia, the region with the heaviest pregnancy-loss burden in the world. Exposure is assessed using a chemical transport model as the concentrations of fire-sourced PM2.5 (i.e., fire PM2.5). The adjusted odds ratio (OR) of pregnancy loss for a 1-μg/m3 increment in averaged concentration of fire PM2.5 during pregnancy is estimated as 1.051 (95% confidence intervals [CI]: 1.035, 1.067). Because fire PM2.5 is more strongly linked with pregnancy loss than non-fire PM2.5 (OR: 1.014; 95% CI: 1.011, 1.016), it contributes to a non-neglectable fraction (13%) of PM2.5-associated pregnancy loss. Here, we show maternal health is threaten by gestational exposure to fire smoke in South Asia.

Suggested Citation

  • Tao Xue & Guannan Geng & Yiqun Han & Huiyu Wang & Jiajianghui Li & Hong-tian Li & Yubo Zhou & Tong Zhu, 2021. "Open fire exposure increases the risk of pregnancy loss in South Asia," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-23529-7
    DOI: 10.1038/s41467-021-23529-7
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