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Cumulative effect of PM2.5 components is larger than the effect of PM2.5 mass on child health in India

Author

Listed:
  • Ekta Chaudhary

    (Indian Institute of Technology Delhi)

  • Franciosalgeo George

    (St John’s Research Institute)

  • Aswathi Saji

    (St John’s Research Institute)

  • Sagnik Dey

    (Indian Institute of Technology Delhi
    IIT Delhi
    IIT Delhi)

  • Santu Ghosh

    (St John’s Medical College)

  • Tinku Thomas

    (St John’s Medical College)

  • Anura. V. Kurpad

    (St John’s Medical College)

  • Sumit Sharma

    (TERI)

  • Nimish Singh

    (Indian Institute of Technology Delhi
    TERI)

  • Shivang Agarwal

    (TERI
    Johns Hopkins University)

  • Unnati Mehta

    (Harvard T.H. Chan School of Public Health)

Abstract

While studies on ambient fine particulate matter (PM2.5) exposure effect on child health are available, the differential effects, if any, of exposure to PM2.5 species are unexplored in lower and middle-income countries. Using multiple logistic regression, we showed that for every 10 μg m−3 increase in PM2.5 exposure, anaemia, acute respiratory infection, and low birth weight prevalence increase by 10% (95% uncertainty interval, UI: 9–11), 11% (8–13), and 5% (4–6), respectively, among children in India. NO3-, elemental carbon, and NH4+ were more associated with the three health outcomes than other PM2.5 species. We found that the total PM2.5 mass as a surrogate marker for air pollution exposure could substantially underestimate the true composite impact of different components of PM2.5. Our findings provide key indigenous evidence to prioritize control strategies for reducing exposure to more toxic species for greater child health benefits in India.

Suggested Citation

  • Ekta Chaudhary & Franciosalgeo George & Aswathi Saji & Sagnik Dey & Santu Ghosh & Tinku Thomas & Anura. V. Kurpad & Sumit Sharma & Nimish Singh & Shivang Agarwal & Unnati Mehta, 2023. "Cumulative effect of PM2.5 components is larger than the effect of PM2.5 mass on child health in India," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-42709-1
    DOI: 10.1038/s41467-023-42709-1
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    1. Ekta Chaudhary & Sagnik Dey & Santu Ghosh & Sumit Sharma & Nimish Singh & Shivang Agarwal & Kushal Tibrewal & Chandra Venkataraman & Anura V. Kurpad & Aaron J. Cohen & Shuxiao Wang & Srishti Jain, 2022. "Reducing the burden of anaemia in Indian women of reproductive age with clean-air targets," Nature Sustainability, Nature, vol. 5(11), pages 939-946, November.
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